OC Medical Center/ A. Thomas Parsa M.D. INC.

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<title>OC Medical Center/ A. Thomas Parsa M.D. INC. · reviews &amp; AI Score · Local AI Registry</title>
<meta name="description" content="OC Medical Center/ A. Thomas Parsa M.D is a family practice physician in Brea, CA. It's rated 4.8 on Google from 245 reviews. Named by 0 of 2 AI assista…">
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          "name": "OC Medical Center/ A. Thomas Parsa M.D. INC.",
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# 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.

# OC Medical Center/ A. Thomas Parsa M.D. INC., Brea: a family practice physician in Brea (2026 guide)

Source: Local AI Registry, https://localairegistry.com/biz/ca/brea/oc-medical-center-a-thomas-parsa-m-d-inc-brea-ca. Free to reuse with a link back.

By Steve Lee, founder and CEO of Local AI Registry. Fact-checked against 2 sources. Updated 2026-08-15. Owner review: not yet.

Canonical: https://localairegistry.com/biz/ca/brea/oc-medical-center-a-thomas-parsa-m-d-inc-brea-ca

## Photos

- ![Photo 1](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmsp51wu3007qyepdoacr2p2o%2F0.jpg)
- ![Photo 2](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmsp51wu3007qyepdoacr2p2o%2F1.jpg)
- ![Photo 3](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmsp51wu3007qyepdoacr2p2o%2F2.jpg)
- ![Photo 4](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmsp51wu3007qyepdoacr2p2o%2F3.jpg)
- ![Photo 5](https://localairegistry.com/api/photo?src=https%3A%2F%2Fseoaesthetic-assets.sfo3.cdn.digitaloceanspaces.com%2Fphotos%2Fcmsp51wu3007qyepdoacr2p2o%2F4.jpg)


## In short

OC Medical Center/ A. Thomas Parsa M.D. INC. is a family practice physician in Brea, CA. Its AI Score is 22 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 | 2864 E Imperial Hwy, Brea, CA 92821, USA |
| Hours | Mon to Fri 9 AM to 12 PM and 2 AM to 5 PM · Closed Sat to Sun |
| Phone | (714) 996-9708 |
| Medical director | Nothing found |
| Rating | 4.8 across 245 reviews on Google |
| Known for | OC Medical Center, led by Dr. A. Thomas Parsa, is best known for its family medicine services and comprehensive care tailored to patients of all ages in Brea. |
| Prices | Nothing found |
| Quietest time | Nothing found |
| Parking | Nothing found |
| Last verified | September 18, 2026, 4:22 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 | 2864 E Imperial Hwy, Brea, CA 92821, USA | Confirmed | Google Business Profile, checked Aug 11, 2026 |
| Location info | Description | OC Medical Center is a true full-service, family practice dedicated to providing high quality healthcare in a comfortable and caring environment. We offer a number of specialty services to make your doctor visit the most efficient, from taking x-rays to having in-office surgical procedures. Our doctors and staff will greet you with friendly faces and give thoughtful treatment and follow-up appointments. We stay on the edge of the latest medical technology and give our patients access to patient portal, which includes a variety of personal medical documents. Our practice is committed to excellence, both professionally and personally and achieve this through mutual respect, understanding, education, and the promotion of wellness. | Confirmed | Google Business Profile, checked Aug 11, 2026 |
| Location info | Hours | Mon to Fri 9:00 AM to 12:00 PM, 2:00 to 5:00 PM · Sat to Sun Closed | Confirmed | Google Business Profile, checked Aug 11, 2026 |
| Location info | Mondays | 9:00 AM to 12:00 PM, 2:00 to 5:00 PM | Confirmed | Google Business Profile, checked Aug 11, 2026 |
| Location info | Name | OC Medical Center/ A. Thomas Parsa M.D. INC. | Confirmed | Google Business Profile, checked Aug 11, 2026 |
| Location info | Phone | (714) 996-9708 | Confirmed | Google Business Profile, checked Aug 11, 2026 |
| Hours | Monday | 9:00 AM to 12:00 PM and 2:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 11, 2026 |
| Hours | Tuesday | 9:00 AM to 12:00 PM and 2:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 11, 2026 |
| Hours | Wednesday | 9:00 AM to 12:00 PM and 2:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 11, 2026 |
| Hours | Thursday | 9:00 AM to 12:00 PM and 2:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 11, 2026 |
| Hours | Friday | 9:00 AM to 12:00 PM and 2:00 AM to 5:00 PM | Confirmed | Google Business Profile, checked Aug 11, 2026 |
| Hours | Saturday | Closed | Confirmed | Google Business Profile, checked Aug 11, 2026 |
| Hours | Sunday | Closed | Confirmed | Google Business Profile, checked Aug 11, 2026 |
| Services | Service | Family medical care | AI guess | Nothing found |
| Services | Service | In-office surgical procedures | AI guess | Nothing found |
| Services | Service | Patient portal access | AI guess | Nothing found |
| Services | Service | X-rays | AI guess | Nothing found |
| Links | Website | http://www.ocmedcenter.com/ | Confirmed | Google Business Profile, checked Aug 11, 2026 |


## Services and prices

Services not read yet, back on Scan Day.


### Known for

OC Medical Center, led by Dr. A. Thomas Parsa, is best known for its family medicine services and comprehensive care tailored to patients of all ages in Brea.


## The team

Nothing found


## Visiting OC Medical Center/ A. Thomas Parsa M.D

Address: 2864 E Imperial Hwy, Brea, CA 92821, USA. Phone: (714) 996-9708. Hours: Mon to Fri 9 AM to 12 PM and 2 AM to 5 PM · Closed Sat to Sun. (Confirmed, Google Business Profile, checked August 11, 2026 at 1:54 PM.)


### Location info from Google Business Profile

Business description, written by OC Medical Center/ A. Thomas Parsa M.D on its Google Business Profile: "OC Medical Center is a true full-service, family practice dedicated to providing high quality healthcare in a comfortable and caring environment. We offer a number of specialty services to make your doctor visit the most efficient, from taking x-rays to having in-office surgical procedures.
Our doctors and staff will greet you with friendly faces and give thoughtful treatment and follow-up appointments. We stay on the edge of the latest medical technology and give our patients access to patient portal, which includes a variety of personal medical documents.
Our practice is committed to excellence, both professionally and personally and achieve this through mutual respect, understanding, education, and the promotion of wellness."


### When to go

Busy times not read yet, back on Scan Day.


### Parking and getting in

Nothing found


### Nearby

| Place | Type | Distance |
| --- | --- | --- |
| Carmel Cafe | Coffee shop | 1 min walk |
| TOGO'S Sandwiches | Sandwich shop | 2 min walk |
| Kraemer-Imperial | Bus station | 6 min walk |
| Kraemer-Imperial | Transit station | 6 min walk |
| Kraemer-Imperial | Bus stop | 6 min walk |
| Kraemer-Saturn | Bus stop | 7 min walk |


## Reputation

4.8 average across 245 reviews: Google 25. (Confirmed, read August 11, 2026.)

OC Medical Center is noted for its compassionate providers like Dr. Parsa and Tiffany Zaken, but suffers from significant front office and billing issues. (AI guess, from 245 reviews.)


### What people like

- Efficient appointment scheduling for routine checkups


### What people do not like

- Long waits past the appointment time
- Incompetent front office staff
- Billing issues and overcharging complaints


### Press

No press story about OC Medical Center/ A. Thomas Parsa M.D found yet.


### Awards

None named yet.


### Directories

Directory listings not read yet.


## Recent updates from OC Medical Center/ A. Thomas Parsa M.D

OC Medical Center/ A. Thomas Parsa M.D hasn't posted an update here yet.


## Questions people ask


### where exactly is this place?

No answer yet


### medical staff at OC Medical Center/ A. Thomas Parsa M.D, or is it techs?

No answer yet


### which one for Family medicine and comprehensive care, OC Medical Center/ A. Thomas Parsa M.D or Jessica C?

No answer yet


### people keep recommending OC Medical Center/ A. Thomas Parsa M.D, what for?

No answer yet


### any last minute appts at OC Medical Center/ A. Thomas Parsa M.D?

No answer yet


### what has OC Medical Center/ A. Thomas Parsa M.D posted recently, I am not on Instagram

No answer yet


### points or member pricing here, worth signing up?

No answer yet


### Open Saturdays here?

No answer yet


### On a budget in Brea, is OC Medical Center/ A. Thomas Parsa M.D the one?

No answer yet


### Why do people rate OC Medical Center/ A. Thomas Parsa M.D?

No answer yet


### do I need to book this place or can I just turn up?

No answer yet


### parking at OC Medical Center/ A. Thomas Parsa M.D, where does everyone put the car?

No answer yet


### bad experiences here, anyone?

No answer yet


### best family practice physician in Brea

No answer yet


### Ballpark for a visit to a physician in Brea?

No answer yet


### can I ask for numbing here without it being weird?

No answer yet


### Are the hours on Google right for OC Medical Center/ A. Thomas Parsa M.D in Brea?

No answer yet


## What AI gets wrong about OC Medical Center/ A. Thomas Parsa M.D

We ask Gemini and ChatGPT about OC Medical Center/ A. Thomas Parsa M.D. 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: 22 of 100

The AI Score measures how likely AI engines are to recommend a business, and how accurately. Family practice physicians on the registry run 21 to 72. Fair starts at 45, good at 65. OC Medical Center/ A. Thomas Parsa M.D scores 22. The same method scores every business on the registry.

| Signal | Weight | Score | What it measures | OC Medical Center/ A. Thomas Parsa M.D |
| --- | --- | --- | --- | --- |
| 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 | 40 | 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. | Named in 0 of 1 answer that recommended anyone. 1 more named nobody, which is not a loss and is not scored. |
| Reviews & response | 12 | 56 | 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 | 52 | Domain authority and editorial quality of the sources that attest to you. | Fair |
| Google Business Profile | 8 | 90 | Required and recommended fields; update cadence. The listing AI pulls from first. | Good |
| Speed & mobile | 7 | Not read yet | Core Web Vitals at the 75th percentile, on a real phone. | No reading has come back for this signal yet. |
| Content freshness & schema | 5 | 28 | Crawl recency, intent alignment, valid JSON-LD, canonicals. | Poor |

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 OC Medical Center/ A. Thomas Parsa M.D 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 OC Medical Center/ A. Thomas Parsa M.D |
| --- | --- | --- | --- | --- |
| OC Medical Center/ A. Thomas Parsa M.D. INC. | MedicalBusiness | #business | http://www.ocmedcenter.com/ | Subject of this page |
| Brea, California | City | #city | Nothing found | City OC Medical Center/ A. Thomas Parsa M.D 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 Brea, linked to the lists and towns around it.


### Lists

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


### 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 OC Medical Center/ A. Thomas Parsa M.D. INC.. 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:ChIJW2uAIlzU3IARatYTOV-4yxk (accessed Aug 11, 2026)
- [2] AI engine output: ChatGPT and Gemini, read by Local AI Registry on Aug 14, 2026, https://localairegistry.com/methodology (accessed Sep 18, 2026)