Local AI Registry
Not claimed yetFamily practice physician · Placentia

Dr. Mary C. Cerni, DO

5.0 · 15 reviews

Eligible to offer 20% cashback to customers who shop here.OrbitBack

24AI ScoreNot read yet

ConfirmedVisitorAI guess

1325 N Rose Dr Ste 203, Placentia, CA 92870

Owned by no one, yet

Unclaimed · Never replied

Is this you? Claim it

AI checked this page on Aug 14, 2026Last activity 1 month ago, a question from placentia_owl.

Answers marked AI. Summaries of reviews and the record. Not medical advice.

Services

What Dr. Mary C. Cerni, DO offers, what it costs, and what people come for.

Known for

Reviews not read yet, back on Scan Day.

The menu

  • SepsisFamily practice physicianAsk
  • Parkinsons diseaseFamily practice physicianAsk
  • HypoglycemiaFamily practice physicianAsk
  • ImmunizationFamily practice physicianAsk
  • Myasthenia gravisFamily practice physicianAsk

Team

Who you'll see, and whether their licenses check out. We check the license before a new person shows as confirmed.

No one is named here yet. The owner can add who works here.

TodayNothing found
ParkingNothing found

Busy times

Not read yet

Reputation

What reviews, press and directories say about Dr. Mary C. Cerni, DO.

5.0from 15 reviews on Google

Dr. Cerni is recognized for her exceptional diagnostic skills and the personal relationships she builds with her patients. Patients describe Dr. Mary C. Cerni as a compassionate and knowledgeable physician who takes the time to understand their health issues. Many express a personal connection, feeling treated like family, and appreciate the supportive and friendly front office staff. The atmosphere is one of genuine care and professionalism.

  • 5100%
  • 40%
  • 30%
  • 20%
  • 10%
Would go back100%100% of reviews give the visit 4 or 5 stars. We assume a good visit means they'd go back.Positive 100%, 4 or 5 stars · Neutral 0%, 3 stars · Negative 0%, 1 or 2 stars
The good
  • Dr. Cerni's compassionate care
  • Thoroughness in reviewing medical records
  • Friendly and helpful staff
The bad

Not read yet

Press and awards

Add press AI can read
In the pressNot read yet
Not covered yetNot checked yet
AwardsNot read yet
DirectoryListedMatches their site
2727 directories AI readsNot checked yetNot checked yet

No updates from Dr. Mary C. Cerni, DO yet.

What AI reads

The page ChatGPT, Gemini, Perplexity and Google read about Dr. Mary C. Cerni, DO. The code version is exactly what their crawlers get.

Local AI Registry · Family practice physicians in Placentia, CA · Editorial

Dr. Mary C. Cerni, DO, Placentia: a family practice physician in Placentia (2026 guide)

Steve Lee

By Steve Lee, founder and CEO of Local AI Registry. Former Google Search executive and former Microsoft executive, with 20+ years in digital.

Fact-checked against 29 sources · Published August 14, 2026 · Updated August 14, 2026 · Machine-readable version below

Owner review: not yet. Dr. Mary C. Cerni, DO has not checked this page. Claim to review it

In short

Dr. Mary C. Cerni, DO is a family practice physician in Placentia, CA. Its AI Score is 24 of 100, which is poor.

Every fact on this page carries one of three marks: Confirmed (from their website, Google Business Profile, review sites, licensing boards, or measured by Local AI Registry), Visitor submitted (added by a person, with a date and how they know), or AI guess (what AI engines like Gemini and ChatGPT are saying, not confirmed by anyone). Every mark points to a reference at the end of this page.

Key facts

FactValue
TypeFamily practice physician
Address1325 N Rose Dr Ste 203, Placentia, CA 92870, USA
HoursNothing found
Phone(714) 888-3629
Medical directorNothing found
Rating5.0 across 15 reviews on Google
Known forNothing found
PricesNothing found
Quietest timeNothing found
ParkingNothing found
Last verifiedSeptember 18, 2026, 7:49 PM

All the details

Every row is something the owner can add or correct. Each one is marked Confirmed, Visitor submitted or AI guess, with where it came from.

GroupFactValueMarkEvidence
Location infoAddress1325 N Rose Dr Ste 203, Placentia, CA 92870, USAConfirmedGoogle Business Profile, checked Aug 14, 2026
Location infoDescription1325 N Rose Dr Ste 203, Placentia, CA 92870ConfirmedGoogle Business Profile, checked Aug 14, 2026
Location infoNameDr. Mary C. Cerni, DOConfirmedGoogle Business Profile, checked Aug 14, 2026
Location infoPhone(714) 888-3629ConfirmedGoogle Business Profile, checked Aug 14, 2026
ServicesServiceAcromegalyConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceAtlee family cosmetic dentistryConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceAutoimmune diseaseConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceCerebral palsyConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceCornersConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceDementiaConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceDiabetes managementAI guessNothing found
ServicesServiceDiabetes mellitusConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceDiabetic emergencies first aid stepsConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceDystoniaConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceEpilepsyConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceEunoiaConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceFamily health careAI guessNothing found
ServicesServiceHypertensionConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceHypoglycemiaConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceImmunizationConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceMagnetic resonance imaging mriConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceMigraineConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceMyasthenia gravisConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceNeurologyConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceOrthopedicsConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceOvarian cancerConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceParkinsons diseaseConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceSepsisConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceSepticemiaConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceSt lukes cm publicationConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceVirusConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceX rayConfirmedBusiness website, checked Sep 18, 2026
ServicesServiceX-ray servicesAI guessNothing found
ServicesServiceZygomatic boneConfirmedBusiness website, checked Sep 18, 2026
LinksWebsitehttps://weence.com/medical/doctors/placentia/dr-mary-c-cerni-do/ConfirmedGoogle Business Profile, checked Aug 14, 2026

Services and prices

These are the 27 services Dr. Mary C. Cerni, DO offers, with the price where we have one and where it came from.

ServicePricePrice markPrice evidenceService mark
SepsisConfirmed
Parkinsons diseaseConfirmed
HypoglycemiaConfirmed
ImmunizationConfirmed
Myasthenia gravisConfirmed
MigraineConfirmed
SepticemiaConfirmed
Diabetic emergencies first aid stepsConfirmed
HypertensionConfirmed
NeurologyConfirmed
Magnetic resonance imaging mriConfirmed
OrthopedicsConfirmed
Ovarian cancerConfirmed
St lukes cm publicationConfirmed
VirusConfirmed
X rayConfirmed
AcromegalyConfirmed
Zygomatic boneConfirmed
Atlee family cosmetic dentistryConfirmed
Autoimmune diseaseConfirmed
Cerebral palsyConfirmed
CornersConfirmed
DementiaConfirmed
Diabetes mellitusConfirmed
DystoniaConfirmed
EpilepsyConfirmed
EunoiaConfirmed

Known for

Reviews not read yet, back on Scan Day.

The team

Nothing found

Visiting Dr. Mary C. Cerni, DO

Address: 1325 N Rose Dr Ste 203, Placentia, CA 92870, USA. Phone: (714) 888-3629. (Confirmed, Google Business Profile, checked August 14, 2026 at 10:12 PM.)

Location info from Google Business Profile

Business description, written by Dr. Mary C. Cerni, DO on its Google Business Profile: "1325 N Rose Dr Ste 203, Placentia, CA 92870"

When to go

Busy times not read yet, back on Scan Day.

Parking and getting in

Nothing found

Nearby

PlaceTypeDistance
Rose-Yorba LindaBus station1 min walk
The Coffee Bean & Tea LeafCoffee shop1 min walk
Farmer's FridgeRestaurant2 min walk
SubwaySandwich shop2 min walk
Taco BellFast food restaurant2 min walk
Mini GourmetAmerican restaurant2 min walk

Reputation

5.0 average across 15 reviews: Google 15. (Confirmed, read August 14, 2026.)

Dr. Cerni is recognized for her exceptional diagnostic skills and the personal relationships she builds with her patients. (AI guess, from 15 reviews.)

What people like

  • Thoroughness in reviewing medical records
  • Friendly and helpful staff

What people do not like

Nothing found

Press

No press story about Dr. Mary C. Cerni, DO found yet.

Awards

None named yet.

Directories

Directory listings not read yet.

Recent updates from Dr. Mary C. Cerni, DO

Dr. Mary C. Cerni, DO hasn't posted an update here yet.

Questions people ask

last update from here was when?

No answer yet

points or member pricing at Dr. Mary C. Cerni, DO, worth signing up?

No answer yet

people keep recommending Dr. Mary C. Cerni, DO, what for?

No answer yet

anywhere on Rose to sit while I wait

No answer yet

Anything this place is known for doing well?

No answer yet

Dr. Mary C. Cerni, DO, any chance to book in this week?

No answer yet

walk in at Dr. Mary C. Cerni, DO in Placentia, or is it appointment only?

No answer yet

Is Dr. Mary C. Cerni, DO run by medical people?

No answer yet

Somewhere to park near Dr. Mary C. Cerni, DO?

No answer yet

numbing at Dr. Mary C. Cerni, DO, do you have to ask for it?

No answer yet

best family practice physician in Placentia

No answer yet

worth it or not, what do the regulars say

No answer yet

picking between the two, is Dr. Samantha M. Von Ins, MD, Family Medicine: Prosperite the safer bet?

No answer yet

On a budget in Placentia, is Dr. Mary C. Cerni, DO the one?

No answer yet

consult here, what do I need to bring?

No answer yet

opening hours here, what are they these days?

No answer yet

how much is a first visit around here

No answer yet

What AI gets wrong about Dr. Mary C. Cerni, DO

We ask Gemini and ChatGPT about Dr. Mary C. Cerni, DO. These are the answers that disagree with the record.

ChatGPT and Gemini, read by Local AI Registry on Aug 14, 2026.

No capture has disagreed with the record yet.

The AI Score: 24 of 100

The AI Score measures how likely AI engines are to recommend a business, and how accurately. Placentia family practice physicians run 24 to 52. Fair starts at 45, good at 65. Dr. Mary C. Cerni, DO scores 24, below the Placentia average of 34. The same method scores every business on the registry.

SignalWeightScoreWhat it measuresDr. Mary C. Cerni, DO
Retrieval grounding260Whether you appear in the ranked results AI retrieves and cites: AI-Overview citations, organic top-10 for your money queries, and the Bing index ChatGPT leans on.Poor
Off-property attestation2042Volume and consistency of what others say about you: YouTube mentions, branded web mentions, third-party “best-of” lists. The cause of retrievability.Poor
AI visibility140Whether ChatGPT, Gemini, Perplexity, and AI Overviews name you, and whether they name you for the right service.Nobody at all was recommended in the 2 answers we hold, so there is nothing to score.
Reviews & response1255The star average is only one input. We also read volume, velocity, the specificity of review language, and response cadence. Specific reviews are what AI quotes verbatim.Fair
Backlink & citation authority866Domain authority and editorial quality of the sources that attest to you.Good
Google Business Profile867Required and recommended fields; update cadence. The listing AI pulls from first.Good
Speed & mobile744Core Web Vitals at the 75th percentile, on a real phone.Poor
Content freshness & schema548Crawl recency, intent alignment, valid JSON-LD, canonicals.Fair

Full method: https://localairegistry.com/methodology

How AI decides what to tell you about a family practice physician

When you ask ChatGPT, Gemini or Google for a med spa, the AI does not visit each business. It reads what is already written about it: the business website, its Google Business Profile, review sites like Yelp and RealSelf, news stories, licensing boards and directories like this one. Then it repeats what those sources agree on.

That is why AI gets small facts wrong. If Yelp says a place is open Mondays and the website says it is not, the AI has to pick one. The table above shows the answers that disagree with the record today.

The more sources agree, and the more specific they are, the more confidently AI recommends a business. A review that says "the nurse did half a syringe in my lips and it looks natural" is far more useful to an AI than one that says "great place."

How to choose a family practice physician in California, with or without AI

A few checks take ten minutes and matter more than any rating. This is general information, not medical advice.

  • Look up every injector. Doctors are listed by the California medical board, and nurses and nurse practitioners by its nursing board. Both lookups are free.
  • Ask who does the injections, and check that person's license.
  • Ask for the price per unit of Botox and per syringe of filler, not per area.
  • Read reviews that name a provider and a treatment. Vague praise is easy to fake.
  • Check that the hours and phone number match on Google, Yelp and the website. Mismatches are how people end up at a locked door.
  • Ask whether they dissolve filler and when they would tell you not to add more.

How to read the marks on this page

  • Confirmed (solid circle): from a known source. The business website, its Google Business Profile, review sites like Yelp, Healthgrades and RealSelf, a licensing board, or measured by Local AI Registry.
  • Visitor submitted (hollow circle): added or corrected by a person, with the date and how they know, like a phone call or a visit.
  • AI guess (hollow triangle): what AI engines are saying right now. Nobody has confirmed it.

About the author

Steve Lee is the founder and CEO of Local AI Registry and sets its editorial standards. He is a former Google executive in Search and a former Microsoft executive, with more than 20 years in digital: search, local discovery, and how people find businesses online. He is based in Irvine.

  • Expertise: search at Google and Microsoft, AI search, answer engine optimization, generative engine optimization, local SEO, structured data and entity mapping.
  • Industry: medical aesthetics, injectables, med spa operations and marketing.
  • Disclosure: Local AI Registry sells services to business owners, including Dr. Mary C. Cerni, DO if it claims this page. That does not change what this page says. Every fact carries its source.

Entity map

Every person, place, organization and treatment named on this page, with a stable ID and a public reference. The JSON-LD below connects them to each other.

EntityTypeID on this pageSame asRelationship to Dr. Mary C. Cerni, DO
Dr. Mary C. Cerni, DOMedicalBusiness#businesshttps://weence.com/medical/doctors/placentia/dr-mary-c-cerni-do/Subject of this page
Placentia, CaliforniaCity#cityNothing foundCity Dr. Mary C. Cerni, DO is in
Local AI RegistryOrganization#publisherhttps://localairegistry.comPublisher of this page
Steve LeePerson#authorhttps://localairegistry.com/teamAuthor of this page

Topical map

Where this page sits in the registry. It's one profile among the family practice physicians in Placentia, linked to the lists and towns around it.

Lists

  • Best family practice physicians in Placentia: https://localairegistry.com/leaderboards/ca/placentia/family-practice-physician
  • Best businesses in Placentia: https://localairegistry.com/leaderboards/ca/placentia

Nearby

  • /los-angeles: https://localairegistry.com/leaderboards/ca/los-angeles
  • /san-francisco: https://localairegistry.com/leaderboards/ca/san-francisco
  • /san-jose: https://localairegistry.com/leaderboards/ca/san-jose
  • /san-diego: https://localairegistry.com/leaderboards/ca/san-diego
  • /irvine: https://localairegistry.com/leaderboards/ca/irvine
  • /fresno: https://localairegistry.com/leaderboards/ca/fresno

Every list

  • Every leaderboard in California: https://localairegistry.com/leaderboards/ca

Frequently asked questions

What is AI search optimization for local business?

Getting a business named when a neighbor asks ChatGPT, Gemini, or Perplexity for a recommendation. Some call it AI SEO, some call it generative engine optimization. Traditional SEO fights for ten blue links; this fights for the one answer an assistant says out loud. The AI Score on this page measures the eight signals that drive it.

What is Local AI Registry?

The public record of how AI sees local business. We score every business we list by one published method, we keep the questions people ask about it in one place, and we never sell rank. Looking up any business here is free.

Assistants read public pages before they answer. This one states what the business does, what people ask about it, and what the Record answers, in one place a machine can read. Correcting what is wrong here changes what an assistant repeats next.

Who writes the answers here?

Registry AI writes the first answer under every question, from the Record and the public sources named beneath it. Neighbors write the rest under pseudonyms. A registered owner can reply as the business, and their reply says so.

I own Dr. Mary C. Cerni, DO. How do I fix something or rank higher?

Register the page. It is free, it takes about five minutes, and it lets you correct the Record and reply as the business. Nothing on this page is for sale, so the only thing that moves the score is the work.

References

Sources cited

  • [1] Google Business Profile, https://www.google.com/maps/place/?q=place_id:ChIJX6k-tQTU3IARHOYFtWAbcHc (accessed Aug 14, 2026)
  • [2] weence.com, https://weence.com/medical-terminology/zygomatic-bone/ (accessed Sep 18, 2026)
  • [3] weence.com, https://weence.com/spotlight/atlee-family-cosmetic-dentistry/ (accessed Sep 18, 2026)
  • [4] weence.com, https://weence.com/medical-terminology/autoimmune-disease/ (accessed Sep 18, 2026)
  • [5] weence.com, https://weence.com/medical-terminology/cerebral-palsy/ (accessed Sep 18, 2026)
  • [6] weence.com, https://weence.com/spotlight/corners/ (accessed Sep 18, 2026)
  • [7] weence.com, https://weence.com/medical-terminology/dementia/ (accessed Sep 18, 2026)
  • [8] weence.com, https://weence.com/medical-terminology/parkinsons-disease/ (accessed Sep 18, 2026)
  • [9] weence.com, https://weence.com/medical-terminology/sepsis/ (accessed Sep 18, 2026)
  • [10] weence.com, https://weence.com/medical-terminology/septicemia/ (accessed Sep 18, 2026)
  • [11] weence.com, https://weence.com/gathered-healthcare-pricing-data/st-lukes-cm-publication/ (accessed Sep 18, 2026)
  • [12] weence.com, https://weence.com/medical-terminology/virus/ (accessed Sep 18, 2026)
  • [13] weence.com, https://weence.com/medical-terminology/x-ray/ (accessed Sep 18, 2026)
  • [14] weence.com, https://weence.com/medical-terminology/acromegaly/ (accessed Sep 18, 2026)
  • [15] weence.com, https://weence.com/medical-terminology/diabetes-mellitus/ (accessed Sep 18, 2026)
  • [16] weence.com, https://weence.com/first-aid-2/diabetic-emergencies-first-aid-steps/ (accessed Sep 18, 2026)
  • [17] weence.com, https://weence.com/medical-terminology/dystonia/ (accessed Sep 18, 2026)
  • [18] weence.com, https://weence.com/medical-terminology/epilepsy/ (accessed Sep 18, 2026)
  • [19] weence.com, https://weence.com/eunoia/ (accessed Sep 18, 2026)
  • [20] weence.com, https://weence.com/medical-terminology/hypertension/ (accessed Sep 18, 2026)
  • [21] weence.com, https://weence.com/medical-terminology/hypoglycemia/ (accessed Sep 18, 2026)
  • [22] weence.com, https://weence.com/medical-terminology/immunization/ (accessed Sep 18, 2026)
  • [23] weence.com, https://weence.com/medical-terminology/magnetic-resonance-imaging-mri/ (accessed Sep 18, 2026)
  • [24] weence.com, https://weence.com/medical-terminology/migraine/ (accessed Sep 18, 2026)
  • [25] weence.com, https://weence.com/medical-terminology/myasthenia-gravis/ (accessed Sep 18, 2026)
  • [26] weence.com, https://weence.com/medical-terminology/neurology/ (accessed Sep 18, 2026)
  • [27] weence.com, https://weence.com/medical-terminology/orthopedics/ (accessed Sep 18, 2026)
  • [28] weence.com, https://weence.com/medical-terminology/ovarian-cancer/ (accessed Sep 18, 2026)
  • [29] AI engine output: ChatGPT and Gemini, read by Local AI Registry on Aug 14, 2026, https://localairegistry.com/methodology (accessed Sep 18, 2026)

The code behind this page

This is exactly what this page sends to Google, Bing, ChatGPT, Claude, Perplexity and Gemini. We publish it in the open for two reasons: so you can see nothing here is hidden or made up, and so any business or developer can copy it. Being a good local AI steward means the machine version says exactly what the human version says.

1. HTTP response headers

Sent before the page. They tell crawlers the canonical address and that a plain markdown copy exists.

HTTP/2 200
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2. Head tags

Title, description, canonical, robots and Open Graph tags. This is what shows in search results and link previews.

<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>Dr. Mary C. Cerni, DO | Placentia, CA · reviews &amp; AI Score · Local AI Registry</title>
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<meta property="og:description" content="Dr. Mary C. Cerni, DO is a family practice physician in Placentia, CA. It's rated 5.0 on Google from 15 reviews. Named by 0 of 2 AI assistants.">
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<meta property="og:type" content="website">
<meta name="twitter:card" content="summary_large_image">
<meta name="geo.position" content="33.8872311;-117.8421982">
<meta name="ICBM" content="33.8872311, -117.8421982">
<meta name="geo.region" content="US-CA">
<meta name="geo.placename" content="Placentia">

3. Structured data (JSON-LD)

One connected graph. Every person and service has its own @id and links to the business, and a licensed person links to the license and the board that issued it.

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          "@id": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca#service-x-ray"
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          "@id": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca#service-x-ray-services"
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      "@type": "MedicalProcedure",
      "@id": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca#service-hypoglycemia",
      "name": "Hypoglycemia"
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      "@type": "MedicalProcedure",
      "@id": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca#service-immunization",
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      "@type": "MedicalProcedure",
      "@id": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca#service-magnetic-resonance-imaging-mri",
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      "name": "Myasthenia gravis"
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      "name": "Neurology"
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      "@type": "MedicalProcedure",
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      "@type": "MedicalProcedure",
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      "name": "Septicemia"
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      "@type": "MedicalProcedure",
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      "name": "St lukes cm publication"
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      "@type": "MedicalProcedure",
      "@id": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca#service-virus",
      "name": "Virus"
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    {
      "@type": "MedicalProcedure",
      "@id": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca#service-x-ray",
      "name": "X ray"
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    {
      "@type": "MedicalProcedure",
      "@id": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca#service-x-ray-services",
      "name": "X-ray services"
    },
    {
      "@type": "MedicalProcedure",
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      "name": "Zygomatic bone"
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      "mainEntity": [
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          "@type": "Question",
          "name": "What is AI search optimization for local business?",
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            "text": "Getting a business named when a neighbor asks ChatGPT, Gemini, or Perplexity for a recommendation. Some call it AI SEO, some call it generative engine optimization. Traditional SEO fights for ten blue links; this fights for the one answer an assistant says out loud. The AI Score on this page measures the eight signals that drive it."
          }
        },
        {
          "@type": "Question",
          "name": "What is Local AI Registry?",
          "acceptedAnswer": {
            "@type": "Answer",
            "text": "The public record of how AI sees local business. We score every business we list by one published method, we keep the questions people ask about it in one place, and we never sell rank. Looking up any business here is free."
          }
        },
        {
          "@type": "Question",
          "name": "How does this page help a business get recommended by AI?",
          "acceptedAnswer": {
            "@type": "Answer",
            "text": "Assistants read public pages before they answer. This one states what the business does, what people ask about it, and what the Record answers, in one place a machine can read. Correcting what is wrong here changes what an assistant repeats next."
          }
        },
        {
          "@type": "Question",
          "name": "Who writes the answers here?",
          "acceptedAnswer": {
            "@type": "Answer",
            "text": "Registry AI writes the first answer under every question, from the Record and the public sources named beneath it. Neighbors write the rest under pseudonyms. A registered owner can reply as the business, and their reply says so."
          }
        },
        {
          "@type": "Question",
          "name": "I own Dr. Mary C. Cerni, DO. How do I fix something or rank higher?",
          "acceptedAnswer": {
            "@type": "Answer",
            "text": "Register the page. It is free, it takes about five minutes, and it lets you correct the Record and reply as the business. Nothing on this page is for sale, so the only thing that moves the score is the work."
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      ]
    },
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          "@type": "ListItem",
          "position": 1,
          "name": "last update from here was when?",
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        },
        {
          "@type": "ListItem",
          "position": 2,
          "name": "points or member pricing at Dr. Mary C. Cerni, DO, worth signing up?",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/does-dr-mary-c-cerni-do-take-rewards-points-or-membership-pricing"
        },
        {
          "@type": "ListItem",
          "position": 3,
          "name": "people keep recommending Dr. Mary C. Cerni, DO, what for?",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-is-the-clinic-known-for"
        },
        {
          "@type": "ListItem",
          "position": 4,
          "name": "anywhere on Rose to sit while I wait",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-is-around-dr-mary-c-cerni-do-on-rose"
        },
        {
          "@type": "ListItem",
          "position": 5,
          "name": "Anything this place is known for doing well?",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-special-features-does-the-clinic-offer"
        },
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          "@type": "ListItem",
          "position": 6,
          "name": "Dr. Mary C. Cerni, DO, any chance to book in this week?",
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        },
        {
          "@type": "ListItem",
          "position": 7,
          "name": "walk in at Dr. Mary C. Cerni, DO in Placentia, or is it appointment only?",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/does-the-clinic-accept-reservations-for-appointments"
        },
        {
          "@type": "ListItem",
          "position": 8,
          "name": "Is Dr. Mary C. Cerni, DO run by medical people?",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/is-dr-mary-c-cerni-do-run-by-medical-staff-or-by-technicians"
        },
        {
          "@type": "ListItem",
          "position": 9,
          "name": "Somewhere to park near Dr. Mary C. Cerni, DO?",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/is-there-parking-available-at-the-clinic"
        },
        {
          "@type": "ListItem",
          "position": 10,
          "name": "numbing at Dr. Mary C. Cerni, DO, do you have to ask for it?",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/can-i-ask-for-numbing-at-dr-mary-c-cerni-do-without-it-being-weird"
        },
        {
          "@type": "ListItem",
          "position": 11,
          "name": "best family practice physician in Placentia",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/best-family-practice-physician-in-placentia"
        },
        {
          "@type": "ListItem",
          "position": 12,
          "name": "worth it or not, what do the regulars say",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-do-people-actually-like-about-dr-mary-c-cerni-do"
        },
        {
          "@type": "ListItem",
          "position": 13,
          "name": "picking between the two, is Dr. Samantha M. Von Ins, MD, Family Medicine: Prosperite the safer bet?",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/dr-mary-c-cerni-do-or-dr-samantha-m-von-ins-md-family-medicine"
        },
        {
          "@type": "ListItem",
          "position": 14,
          "name": "On a budget in Placentia, is Dr. Mary C. Cerni, DO the one?",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/is-there-anywhere-cheaper-than-dr-mary-c-cerni-do-in-placentia-that-is"
        },
        {
          "@type": "ListItem",
          "position": 15,
          "name": "consult here, what do I need to bring?",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-should-i-know-before-a-consult-at-dr-mary-c-cerni-do"
        },
        {
          "@type": "ListItem",
          "position": 16,
          "name": "opening hours here, what are they these days?",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-are-the-operating-hours-of-dr-mary-c-cernis-clinic"
        },
        {
          "@type": "ListItem",
          "position": 17,
          "name": "how much is a first visit around here",
          "url": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-does-a-family-practice-physician-actually-cost-in-placentia"
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    {
      "@type": "BreadcrumbList",
      "@id": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca#breadcrumb",
      "itemListElement": [
        {
          "@type": "ListItem",
          "position": 1,
          "name": "Placentia, CA",
          "item": "https://localairegistry.com/leaderboards/ca/placentia"
        },
        {
          "@type": "ListItem",
          "position": 2,
          "name": "Family practice physicians",
          "item": "https://localairegistry.com/leaderboards/ca/placentia/family-practice-physician"
        },
        {
          "@type": "ListItem",
          "position": 3,
          "name": "Dr. Mary C. Cerni, DO",
          "item": "https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca"
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    }
  ]
}

4. robots.txt

Invites every major AI crawler by name. Many sites block them. We want this page read and cited.

User-Agent: *
Allow: /
Allow: /_next/static/
Allow: /_next/image
Disallow: /api/
Disallow: /_next/data/

User-Agent: GPTBot
Allow: /
Disallow: /api/
Disallow: /_next/data/

User-Agent: OAI-SearchBot
Allow: /
Disallow: /api/
Disallow: /_next/data/

User-Agent: ChatGPT-User
Allow: /
Disallow: /api/
Disallow: /_next/data/

User-Agent: ClaudeBot
Allow: /
Disallow: /api/
Disallow: /_next/data/

User-Agent: Claude-SearchBot
Allow: /
Disallow: /api/
Disallow: /_next/data/

User-Agent: Claude-User
Allow: /
Disallow: /api/
Disallow: /_next/data/

User-Agent: PerplexityBot
Allow: /
Disallow: /api/
Disallow: /_next/data/

User-Agent: Perplexity-User
Allow: /
Disallow: /api/
Disallow: /_next/data/

User-Agent: Google-Extended
Allow: /
Disallow: /api/
Disallow: /_next/data/

User-Agent: Applebot-Extended
Allow: /
Disallow: /api/
Disallow: /_next/data/

Sitemap: https://localairegistry.com/sitemap.xml

5. sitemap.xml

Lists this page with the day it last changed, the same day the page says it was updated.

<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
  <url>
    <loc>https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca</loc>
    <lastmod>2026-08-15T05:13:45.633Z</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.8</priority>
  </url>
  <url>
    <loc>https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca.md</loc>
    <lastmod>2026-08-15T05:13:45.633Z</lastmod>
    <changefreq>weekly</changefreq>
    <priority>0.8</priority>
  </url>
</urlset>

6. llms.txt

A plain index for language models: what the site is, which pages to read first, and where the markdown copies live.

# Local AI Registry

> The public record of what AI assistants say about local businesses. Every entry checked, scored, and kept current.

Local AI Registry is the editorial, never-sponsored record of what local
businesses are known for, and whether AI assistants actually recommend them.
We score every local business the same way and rank them: website, reviews,
AI visibility, and more. Eight signals, one number from 0 to 100. The heaviest
is whether AI can retrieve you at all.

## Read these first

- [Local AI Registry](https://localairegistry.com): AI assistants now decide which local business to recommend.
- [Methodology](https://localairegistry.com/methodology): Eight signals, one number from 0 to 100.
- [Leaderboards](https://localairegistry.com/leaderboards): Browse AI Score leaderboards by state, city, and category.
- [About](https://localairegistry.com/about): The honest record of who AI recommends.
- [Pricing](https://localairegistry.com/pricing): Four levels of presence, from a free registry entry to being the answer AI gives first in your market.
- [Journal](https://localairegistry.com/journal): How AI assistants decide which local businesses to recommend, and what owners can do about it.

## Business pages

- [Sitemap](https://localairegistry.com/sitemap.xml): Every business page on the registry, with the day each was last updated.
- Every business page has a markdown copy at its own address with `.md` on the end. The copy holds the same facts, marks and sources as the page, in the page's order: the photos with their captions, the team and their licenses, the reviews summary, and the questions locals asked with the replies. The page names it in its head and its HTTP `Link` header.

7. Markdown copy of this page (dr-mary-c-cerni-do-placentia-ca.md)

The article as plain text: the same headings, facts, marks and sources.

# Dr. Mary C. Cerni, DO, Placentia: a family practice physician in Placentia (2026 guide)

Source: Local AI Registry, https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca. Free to reuse with a link back.

By Steve Lee, founder and CEO of Local AI Registry. Fact-checked against 29 sources. Updated 2026-08-15. Owner review: not yet.

Canonical: https://localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca

## In short

Dr. Mary C. Cerni, DO is a family practice physician in Placentia, CA. Its AI Score is 24 of 100, which is poor.

Every fact on this page carries one of three marks: Confirmed (from their website, Google Business Profile, review sites, licensing boards, or measured by Local AI Registry), Visitor submitted (added by a person, with a date and how they know), or AI guess (what AI engines like Gemini and ChatGPT are saying, not confirmed by anyone). Every mark points to a reference at the end of this page.


## Key facts

| Fact | Value |
| --- | --- |
| Type | Family practice physician |
| Address | 1325 N Rose Dr Ste 203, Placentia, CA 92870, USA |
| Hours | Nothing found |
| Phone | (714) 888-3629 |
| Medical director | Nothing found |
| Rating | 5.0 across 15 reviews on Google |
| Known for | Nothing found |
| Prices | Nothing found |
| Quietest time | Nothing found |
| Parking | Nothing found |
| Last verified | September 18, 2026, 7:49 PM |


## All the details

Every row is something the owner can add or correct. Each one is marked Confirmed, Visitor submitted or AI guess, with where it came from.

| Group | Fact | Value | Mark | Evidence |
| --- | --- | --- | --- | --- |
| Location info | Address | 1325 N Rose Dr Ste 203, Placentia, CA 92870, USA | Confirmed | Google Business Profile, checked Aug 14, 2026 |
| Location info | Description | 1325 N Rose Dr Ste 203, Placentia, CA 92870 | Confirmed | Google Business Profile, checked Aug 14, 2026 |
| Location info | Name | Dr. Mary C. Cerni, DO | Confirmed | Google Business Profile, checked Aug 14, 2026 |
| Location info | Phone | (714) 888-3629 | Confirmed | Google Business Profile, checked Aug 14, 2026 |
| Services | Service | Acromegaly | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Atlee family cosmetic dentistry | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Autoimmune disease | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Cerebral palsy | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Corners | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Dementia | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Diabetes management | AI guess | Nothing found |
| Services | Service | Diabetes mellitus | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Diabetic emergencies first aid steps | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Dystonia | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Epilepsy | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Eunoia | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Family health care | AI guess | Nothing found |
| Services | Service | Hypertension | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Hypoglycemia | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Immunization | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Magnetic resonance imaging mri | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Migraine | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Myasthenia gravis | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Neurology | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Orthopedics | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Ovarian cancer | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Parkinsons disease | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Sepsis | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Septicemia | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | St lukes cm publication | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | Virus | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | X ray | Confirmed | Business website, checked Sep 18, 2026 |
| Services | Service | X-ray services | AI guess | Nothing found |
| Services | Service | Zygomatic bone | Confirmed | Business website, checked Sep 18, 2026 |
| Links | Website | https://weence.com/medical/doctors/placentia/dr-mary-c-cerni-do/ | Confirmed | Google Business Profile, checked Aug 14, 2026 |


## Services and prices

These are the 27 services Dr. Mary C. Cerni, DO offers, with the price where we have one and where it came from.

| Service | Price | Price mark | Price evidence | Service mark |
| --- | --- | --- | --- | --- |
| Sepsis |  |  |  | Confirmed |
| Parkinsons disease |  |  |  | Confirmed |
| Hypoglycemia |  |  |  | Confirmed |
| Immunization |  |  |  | Confirmed |
| Myasthenia gravis |  |  |  | Confirmed |
| Migraine |  |  |  | Confirmed |
| Septicemia |  |  |  | Confirmed |
| Diabetic emergencies first aid steps |  |  |  | Confirmed |
| Hypertension |  |  |  | Confirmed |
| Neurology |  |  |  | Confirmed |
| Magnetic resonance imaging mri |  |  |  | Confirmed |
| Orthopedics |  |  |  | Confirmed |
| Ovarian cancer |  |  |  | Confirmed |
| St lukes cm publication |  |  |  | Confirmed |
| Virus |  |  |  | Confirmed |
| X ray |  |  |  | Confirmed |
| Acromegaly |  |  |  | Confirmed |
| Zygomatic bone |  |  |  | Confirmed |
| Atlee family cosmetic dentistry |  |  |  | Confirmed |
| Autoimmune disease |  |  |  | Confirmed |
| Cerebral palsy |  |  |  | Confirmed |
| Corners |  |  |  | Confirmed |
| Dementia |  |  |  | Confirmed |
| Diabetes mellitus |  |  |  | Confirmed |
| Dystonia |  |  |  | Confirmed |
| Epilepsy |  |  |  | Confirmed |
| Eunoia |  |  |  | Confirmed |


### Known for

Reviews not read yet, back on Scan Day.


## The team

Nothing found


## Visiting Dr. Mary C. Cerni, DO

Address: 1325 N Rose Dr Ste 203, Placentia, CA 92870, USA. Phone: (714) 888-3629. (Confirmed, Google Business Profile, checked August 14, 2026 at 10:12 PM.)


### Location info from Google Business Profile

Business description, written by Dr. Mary C. Cerni, DO on its Google Business Profile: "1325 N Rose Dr Ste 203, Placentia, CA 92870"


### When to go

Busy times not read yet, back on Scan Day.


### Parking and getting in

Nothing found


### Nearby

| Place | Type | Distance |
| --- | --- | --- |
| Rose-Yorba Linda | Bus station | 1 min walk |
| The Coffee Bean & Tea Leaf | Coffee shop | 1 min walk |
| Farmer's Fridge | Restaurant | 2 min walk |
| Subway | Sandwich shop | 2 min walk |
| Taco Bell | Fast food restaurant | 2 min walk |
| Mini Gourmet | American restaurant | 2 min walk |


## Reputation

5.0 average across 15 reviews: Google 15. (Confirmed, read August 14, 2026.)

Dr. Cerni is recognized for her exceptional diagnostic skills and the personal relationships she builds with her patients. (AI guess, from 15 reviews.)


### What people like

- Thoroughness in reviewing medical records
- Friendly and helpful staff


### What people do not like

Nothing found


### Press

No press story about Dr. Mary C. Cerni, DO found yet.


### Awards

None named yet.


### Directories

Directory listings not read yet.


## Recent updates from Dr. Mary C. Cerni, DO

Dr. Mary C. Cerni, DO hasn't posted an update here yet.


## Questions people ask


### last update from here was when?

No answer yet


### points or member pricing at Dr. Mary C. Cerni, DO, worth signing up?

No answer yet


### people keep recommending Dr. Mary C. Cerni, DO, what for?

No answer yet


### anywhere on Rose to sit while I wait

No answer yet


### Anything this place is known for doing well?

No answer yet


### Dr. Mary C. Cerni, DO, any chance to book in this week?

No answer yet


### walk in at Dr. Mary C. Cerni, DO in Placentia, or is it appointment only?

No answer yet


### Is Dr. Mary C. Cerni, DO run by medical people?

No answer yet


### Somewhere to park near Dr. Mary C. Cerni, DO?

No answer yet


### numbing at Dr. Mary C. Cerni, DO, do you have to ask for it?

No answer yet


### best family practice physician in Placentia

No answer yet


### worth it or not, what do the regulars say

No answer yet


### picking between the two, is Dr. Samantha M. Von Ins, MD, Family Medicine: Prosperite the safer bet?

No answer yet


### On a budget in Placentia, is Dr. Mary C. Cerni, DO the one?

No answer yet


### consult here, what do I need to bring?

No answer yet


### opening hours here, what are they these days?

No answer yet


### how much is a first visit around here

No answer yet


## What AI gets wrong about Dr. Mary C. Cerni, DO

We ask Gemini and ChatGPT about Dr. Mary C. Cerni, DO. These are the answers that disagree with the record.

ChatGPT and Gemini, read by Local AI Registry on Aug 14, 2026.

No capture has disagreed with the record yet.


## The AI Score: 24 of 100

The AI Score measures how likely AI engines are to recommend a business, and how accurately. Placentia family practice physicians run 24 to 52. Fair starts at 45, good at 65. Dr. Mary C. Cerni, DO scores 24, below the Placentia average of 34. The same method scores every business on the registry.

| Signal | Weight | Score | What it measures | Dr. Mary C. Cerni, DO |
| --- | --- | --- | --- | --- |
| Retrieval grounding | 26 | 0 | Whether you appear in the ranked results AI retrieves and cites: AI-Overview citations, organic top-10 for your money queries, and the Bing index ChatGPT leans on. | Poor |
| Off-property attestation | 20 | 42 | Volume and consistency of what others say about you: YouTube mentions, branded web mentions, third-party “best-of” lists. The cause of retrievability. | Poor |
| AI visibility | 14 | 0 | Whether ChatGPT, Gemini, Perplexity, and AI Overviews name you, and whether they name you for the right service. | Nobody at all was recommended in the 2 answers we hold, so there is nothing to score. |
| Reviews & response | 12 | 55 | The star average is only one input. We also read volume, velocity, the specificity of review language, and response cadence. Specific reviews are what AI quotes verbatim. | Fair |
| Backlink & citation authority | 8 | 66 | Domain authority and editorial quality of the sources that attest to you. | Good |
| Google Business Profile | 8 | 67 | Required and recommended fields; update cadence. The listing AI pulls from first. | Good |
| Speed & mobile | 7 | 44 | Core Web Vitals at the 75th percentile, on a real phone. | Poor |
| Content freshness & schema | 5 | 48 | Crawl recency, intent alignment, valid JSON-LD, canonicals. | Fair |

Full method: https://localairegistry.com/methodology


## How AI decides what to tell you about a family practice physician

When you ask ChatGPT, Gemini or Google for a med spa, the AI does not visit each business. It reads what is already written about it: the business website, its Google Business Profile, review sites like Yelp and RealSelf, news stories, licensing boards and directories like this one. Then it repeats what those sources agree on.

That is why AI gets small facts wrong. If Yelp says a place is open Mondays and the website says it is not, the AI has to pick one. The table above shows the answers that disagree with the record today.

The more sources agree, and the more specific they are, the more confidently AI recommends a business. A review that says "the nurse did half a syringe in my lips and it looks natural" is far more useful to an AI than one that says "great place."


## How to choose a family practice physician in California, with or without AI

A few checks take ten minutes and matter more than any rating. This is general information, not medical advice.

- Look up every injector. Doctors are listed by the California medical board, and nurses and nurse practitioners by its nursing board. Both lookups are free.
- Ask who does the injections, and check that person's license.
- Ask for the price per unit of Botox and per syringe of filler, not per area.
- Read reviews that name a provider and a treatment. Vague praise is easy to fake.
- Check that the hours and phone number match on Google, Yelp and the website. Mismatches are how people end up at a locked door.
- Ask whether they dissolve filler and when they would tell you not to add more.


## How to read the marks on this page

- Confirmed (solid circle): from a known source. The business website, its Google Business Profile, review sites like Yelp, Healthgrades and RealSelf, a licensing board, or measured by Local AI Registry.
- Visitor submitted (hollow circle): added or corrected by a person, with the date and how they know, like a phone call or a visit.
- AI guess (hollow triangle): what AI engines are saying right now. Nobody has confirmed it.


## About the author

Steve Lee is the founder and CEO of Local AI Registry and sets its editorial standards. He is a former Google executive in Search and a former Microsoft executive, with more than 20 years in digital: search, local discovery, and how people find businesses online. He is based in Irvine.

- Expertise: search at Google and Microsoft, AI search, answer engine optimization, generative engine optimization, local SEO, structured data and entity mapping.
- Industry: medical aesthetics, injectables, med spa operations and marketing.
- Disclosure: Local AI Registry sells services to business owners, including Dr. Mary C. Cerni, DO if it claims this page. That does not change what this page says. Every fact carries its source.


## Entity map

Every person, place, organization and treatment named on this page, with a stable ID and a public reference. The JSON-LD below connects them to each other.

| Entity | Type | ID on this page | Same as | Relationship to Dr. Mary C. Cerni, DO |
| --- | --- | --- | --- | --- |
| Dr. Mary C. Cerni, DO | MedicalBusiness | #business | https://weence.com/medical/doctors/placentia/dr-mary-c-cerni-do/ | Subject of this page |
| Placentia, California | City | #city | Nothing found | City Dr. Mary C. Cerni, DO is in |
| Local AI Registry | Organization | #publisher | https://localairegistry.com | Publisher of this page |
| Steve Lee | Person | #author | https://localairegistry.com/team | Author of this page |


## Topical map

Where this page sits in the registry. It's one profile among the family practice physicians in Placentia, linked to the lists and towns around it.


### Lists

- Best family practice physicians in Placentia: https://localairegistry.com/leaderboards/ca/placentia/family-practice-physician
- Best businesses in Placentia: https://localairegistry.com/leaderboards/ca/placentia


### Nearby

- /los-angeles: https://localairegistry.com/leaderboards/ca/los-angeles
- /san-francisco: https://localairegistry.com/leaderboards/ca/san-francisco
- /san-jose: https://localairegistry.com/leaderboards/ca/san-jose
- /san-diego: https://localairegistry.com/leaderboards/ca/san-diego
- /irvine: https://localairegistry.com/leaderboards/ca/irvine
- /fresno: https://localairegistry.com/leaderboards/ca/fresno


### Every list

- Every leaderboard in California: https://localairegistry.com/leaderboards/ca


## Frequently asked questions


### What is AI search optimization for local business?

Getting a business named when a neighbor asks ChatGPT, Gemini, or Perplexity for a recommendation. Some call it AI SEO, some call it generative engine optimization. Traditional SEO fights for ten blue links; this fights for the one answer an assistant says out loud. The AI Score on this page measures the eight signals that drive it.


### What is Local AI Registry?

The public record of how AI sees local business. We score every business we list by one published method, we keep the questions people ask about it in one place, and we never sell rank. Looking up any business here is free.


### How does this page help a business get recommended by AI?

Assistants read public pages before they answer. This one states what the business does, what people ask about it, and what the Record answers, in one place a machine can read. Correcting what is wrong here changes what an assistant repeats next.


### Who writes the answers here?

Registry AI writes the first answer under every question, from the Record and the public sources named beneath it. Neighbors write the rest under pseudonyms. A registered owner can reply as the business, and their reply says so.


### I own Dr. Mary C. Cerni, DO. How do I fix something or rank higher?

Register the page. It is free, it takes about five minutes, and it lets you correct the Record and reply as the business. Nothing on this page is for sale, so the only thing that moves the score is the work.


## References


### Sources cited

- [1] Google Business Profile, https://www.google.com/maps/place/?q=place_id:ChIJX6k-tQTU3IARHOYFtWAbcHc (accessed Aug 14, 2026)
- [2] weence.com, https://weence.com/medical-terminology/zygomatic-bone/ (accessed Sep 18, 2026)
- [3] weence.com, https://weence.com/spotlight/atlee-family-cosmetic-dentistry/ (accessed Sep 18, 2026)
- [4] weence.com, https://weence.com/medical-terminology/autoimmune-disease/ (accessed Sep 18, 2026)
- [5] weence.com, https://weence.com/medical-terminology/cerebral-palsy/ (accessed Sep 18, 2026)
- [6] weence.com, https://weence.com/spotlight/corners/ (accessed Sep 18, 2026)
- [7] weence.com, https://weence.com/medical-terminology/dementia/ (accessed Sep 18, 2026)
- [8] weence.com, https://weence.com/medical-terminology/parkinsons-disease/ (accessed Sep 18, 2026)
- [9] weence.com, https://weence.com/medical-terminology/sepsis/ (accessed Sep 18, 2026)
- [10] weence.com, https://weence.com/medical-terminology/septicemia/ (accessed Sep 18, 2026)
- [11] weence.com, https://weence.com/gathered-healthcare-pricing-data/st-lukes-cm-publication/ (accessed Sep 18, 2026)
- [12] weence.com, https://weence.com/medical-terminology/virus/ (accessed Sep 18, 2026)
- [13] weence.com, https://weence.com/medical-terminology/x-ray/ (accessed Sep 18, 2026)
- [14] weence.com, https://weence.com/medical-terminology/acromegaly/ (accessed Sep 18, 2026)
- [15] weence.com, https://weence.com/medical-terminology/diabetes-mellitus/ (accessed Sep 18, 2026)
- [16] weence.com, https://weence.com/first-aid-2/diabetic-emergencies-first-aid-steps/ (accessed Sep 18, 2026)
- [17] weence.com, https://weence.com/medical-terminology/dystonia/ (accessed Sep 18, 2026)
- [18] weence.com, https://weence.com/medical-terminology/epilepsy/ (accessed Sep 18, 2026)
- [19] weence.com, https://weence.com/eunoia/ (accessed Sep 18, 2026)
- [20] weence.com, https://weence.com/medical-terminology/hypertension/ (accessed Sep 18, 2026)
- [21] weence.com, https://weence.com/medical-terminology/hypoglycemia/ (accessed Sep 18, 2026)
- [22] weence.com, https://weence.com/medical-terminology/immunization/ (accessed Sep 18, 2026)
- [23] weence.com, https://weence.com/medical-terminology/magnetic-resonance-imaging-mri/ (accessed Sep 18, 2026)
- [24] weence.com, https://weence.com/medical-terminology/migraine/ (accessed Sep 18, 2026)
- [25] weence.com, https://weence.com/medical-terminology/myasthenia-gravis/ (accessed Sep 18, 2026)
- [26] weence.com, https://weence.com/medical-terminology/neurology/ (accessed Sep 18, 2026)
- [27] weence.com, https://weence.com/medical-terminology/orthopedics/ (accessed Sep 18, 2026)
- [28] weence.com, https://weence.com/medical-terminology/ovarian-cancer/ (accessed Sep 18, 2026)
- [29] AI engine output: ChatGPT and Gemini, read by Local AI Registry on Aug 14, 2026, https://localairegistry.com/methodology (accessed Sep 18, 2026)

For developers: what makes this page machine-readable

  • One source of truth. The page, the HTML, the JSON-LD and the markdown copy are generated from the same record, so they cannot disagree.
  • People are linked to their credentials, and credentials to the board that issued them (recognizedBy).
  • Answers come first. The page opens with a one-paragraph summary and a key facts table, marked speakable.
  • Wrong AI answers are published as ClaimReview, so engines can see the correction and its source.
  • The FAQ holds the questions this page answers. The questions locals asked are listed as an ItemList, each pointing at its own page, where its replies are the QAPage.
  • robots.txt names the AI crawlers and allows them.
  • A markdown copy sits at the same address with .md, linked from the HTTP headers, the head and llms.txt.
  • No text is hidden from people that crawlers can see. What machines read is what you read.

Checklist

  • Done: Title tag and meta description
  • Done: Canonical URL and breadcrumbs
  • Done: Expert byline, Steve Lee
  • Done: Entity map with sameAs links
  • Done: robots.txt welcomes AI crawlers
  • Done: Key facts answer block
  • Done: 29 cited sources
  • Done: Updated date on the page
  • Missing: Schema: business, team, services
  • Done: Schema: FAQ and article
  • Missing: Corrections to what AI gets wrong
  • Done: Details table, every fact sourced
  • Done: Open Graph and social cards
  • Done: llms.txt and markdown copy
  • Done: Sitemap with lastmod
  • Missing: Owner review of this page
  • Missing: Owner-confirmed prices

Copy this code

Every file above is free to copy for your own business page. Keep the attribution links to Local AI Registry (https://localairegistry.com) in place: they tell AI engines where the method comes from, and they help us keep this free.

  • Method: https://localairegistry.com/methodology
  • Claim a page: https://localairegistry.com/claim/cmstx6r20061eyedrgwiilj4i

References, including locals

Every source behind this page, including every post and comment from locals. Each has its own permanent link, so AI engines can check it and anything copied from here carries its link back.

  1. last update from here was when? Question by placentia_owl, Sep 14, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-has-dr-mary-c-cerni-do-been-posting-lately
  2. points or member pricing at Dr. Mary C. Cerni, DO, worth signing up? Question by birthday_commuter_uptown, Sep 11, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/does-dr-mary-c-cerni-do-take-rewards-points-or-membership-pricing
  3. people keep recommending Dr. Mary C. Cerni, DO, what for? Question by spring_lurker_east, Sep 11, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-is-the-clinic-known-for
  4. anywhere on Rose to sit while I wait Question by winter_sitter_north, Sep 10, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-is-around-dr-mary-c-cerni-do-on-rose
  5. Anything this place is known for doing well? Question by picky_on_rose, Sep 6, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-special-features-does-the-clinic-offer
  6. Dr. Mary C. Cerni, DO, any chance to book in this week? Question by no_rush_in_placentia, Sep 4, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/does-dr-mary-c-cerni-do-ever-have-last-minute-openings
  7. walk in at Dr. Mary C. Cerni, DO in Placentia, or is it appointment only? Question by winter_runner_west, Sep 4, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/does-the-clinic-accept-reservations-for-appointments
  8. Is Dr. Mary C. Cerni, DO run by medical people? Question by reunion_runner_east, Sep 3, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/is-dr-mary-c-cerni-do-run-by-medical-staff-or-by-technicians
  9. Somewhere to park near Dr. Mary C. Cerni, DO? Question by rose_wilder, Aug 28, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/is-there-parking-available-at-the-clinic
  10. numbing at Dr. Mary C. Cerni, DO, do you have to ask for it? Question by browsing_in_placentia_92870, Aug 25, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/can-i-ask-for-numbing-at-dr-mary-c-cerni-do-without-it-being-weird
  11. best family practice physician in Placentia Question by second_opinion_on_rose, Aug 21, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/best-family-practice-physician-in-placentia
  12. worth it or not, what do the regulars say Question by winter_lurker_east, Aug 16, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-do-people-actually-like-about-dr-mary-c-cerni-do
  13. picking between the two, is Dr. Samantha M. Von Ins, MD, Family Medicine: Prosperite the safer bet? Question by spring_reader_north, Aug 12, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/dr-mary-c-cerni-do-or-dr-samantha-m-von-ins-md-family-medicine
  14. On a budget in Placentia, is Dr. Mary C. Cerni, DO the one? Question by autumn_sitter_south, Aug 7, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/is-there-anywhere-cheaper-than-dr-mary-c-cerni-do-in-placentia-that-is
  15. consult here, what do I need to bring? Question by wedding_lurker_uptown, Aug 4, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-should-i-know-before-a-consult-at-dr-mary-c-cerni-do
  16. opening hours here, what are they these days? Question by undecided_on_rose, Jul 31, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-are-the-operating-hours-of-dr-mary-c-cernis-clinic
  17. how much is a first visit around here Question by june_commuter_south, Jul 22, 2026. localairegistry.com/biz/ca/placentia/dr-mary-c-cerni-do-placentia-ca/q/what-does-a-family-practice-physician-actually-cost-in-placentia
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References

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This is the evidence for every fact on this page, across Locals, Services, Team, Visit, Reputation and Updates. Each reference names the fact, the source, what kind of source it is, and the date it was checked, with a link and an archived copy so anyone can verify it. Visitor references are dated firsthand accounts. AI guesses record what an AI engine said on that date, not what is true.

  1. [1]VisitName, address, phone, website and descriptionGoogle Business Profile.Primary source · Accessed Aug 14, 2026 · https://www.google.com/maps/place/?q=place_id:ChIJX6k-tQTU3IARHOYFtWAbcHc · No archived copy yet
  2. [2]ServicesZygomatic boneweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/zygomatic-bone/ · No archived copy yet
  3. [3]ServicesAtlee family cosmetic dentistryweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/spotlight/atlee-family-cosmetic-dentistry/ · No archived copy yet
  4. [4]ServicesAutoimmune diseaseweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/autoimmune-disease/ · No archived copy yet
  5. [5]ServicesCerebral palsyweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/cerebral-palsy/ · No archived copy yet
  6. [6]ServicesCornersweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/spotlight/corners/ · No archived copy yet
  7. [7]ServicesDementiaweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/dementia/ · No archived copy yet
  8. [8]ServicesParkinsons diseaseweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/parkinsons-disease/ · No archived copy yet
  9. [9]ServicesSepsisweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/sepsis/ · No archived copy yet
  10. [10]ServicesSepticemiaweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/septicemia/ · No archived copy yet
  11. [11]ServicesSt lukes cm publicationweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/gathered-healthcare-pricing-data/st-lukes-cm-publication/ · No archived copy yet
  12. [12]ServicesVirusweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/virus/ · No archived copy yet
  13. [13]ServicesX rayweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/x-ray/ · No archived copy yet
  14. [14]ServicesAcromegalyweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/acromegaly/ · No archived copy yet
  15. [15]ServicesDiabetes mellitusweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/diabetes-mellitus/ · No archived copy yet
  16. [16]ServicesDiabetic emergencies first aid stepsweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/first-aid-2/diabetic-emergencies-first-aid-steps/ · No archived copy yet
  17. [17]ServicesDystoniaweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/dystonia/ · No archived copy yet
  18. [18]ServicesEpilepsyweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/epilepsy/ · No archived copy yet
  19. [19]ServicesEunoiaweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/eunoia/ · No archived copy yet
  20. [20]ServicesHypertensionweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/hypertension/ · No archived copy yet
  21. [21]ServicesHypoglycemiaweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/hypoglycemia/ · No archived copy yet
  22. [22]ServicesImmunizationweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/immunization/ · No archived copy yet
  23. [23]ServicesMagnetic resonance imaging mriweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/magnetic-resonance-imaging-mri/ · No archived copy yet
  24. [24]ServicesMigraineweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/migraine/ · No archived copy yet
  25. [25]ServicesMyasthenia gravisweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/myasthenia-gravis/ · No archived copy yet
  26. [26]ServicesNeurologyweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/neurology/ · No archived copy yet
  27. [27]ServicesOrthopedicsweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/orthopedics/ · No archived copy yet
  28. [28]ServicesOvarian cancerweence.com.Primary source · Accessed Sep 18, 2026 · https://weence.com/medical-terminology/ovarian-cancer/ · No archived copy yet
  29. [29]ServicesDiabetes management, Family health care and X-ray servicesAI engine output: ChatGPT and Gemini, read by Local AI Registry on Aug 14, 2026.AI engine output · Accessed Sep 18, 2026 · https://localairegistry.com/methodology · No archived copy yet