# True Dermatology, West Covina: a dermatologist in West Covina (2026 guide) Source: Local AI Registry, https://localairegistry.com/biz/ca/west-covina/true-dermatology-west-covina-ca. Free to reuse with a link back. By Steve Lee, founder and CEO of Local AI Registry. Fact-checked against 16 sources. Updated 2026-10-17. Owner review: not yet. Canonical: https://localairegistry.com/biz/ca/west-covina/true-dermatology-west-covina-ca ## In short True Dermatology is a dermatologist in West Covina, CA. Its AI Score is 57 of 100, which is fair. 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 | Dermatologist | | Address | 820 W Merced Ave, West Covina, CA 91790, USA | | Hours | Mon to Fri 9 AM to 6 PM · Closed Sat to Sun | | Phone | (626) 635-1688 | | Medical director | Nothing found | | Rating | 5.0 across 7 reviews | | Known for | True Dermatology is best known for the expertise of Dr. Calvin Sung and his effective treatments, particularly in hair loss solutions like Rogaine injections. | | Prices | Nothing found | | Quietest time | Nothing found | | Parking | Nothing found | | Last verified | October 17, 2026, 4:54 AM | ## 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 | 820 W Merced Ave, West Covina, CA 91790, USA | Confirmed | Google Business Profile, checked Aug 14, 2026 | | Location info | Description | True Dermatology is a double board-certified, dermatologist-led practice with same-day and same-week appointments across the San Gabriel Valley, Los Angeles, and Orange County. Our multilingual providers offer care in English, Spanish, Chinese, Cantonese, Korean, and Vietnamese. Locations: Arcadia, Monterey Park, Los Angeles, West Covina, Glendora, and Anaheim, plus dedicated phototherapy centers at each location for eczema, psoriasis, and vitiligo. We accept nearly all insurance to Medi-Cal, HMO, PPO, commercial, and Medicare to plus affordable self-pay options. We treat acne, skin tags, and hair loss. Cosmetic services include Botox, fillers, chemical peels, hair loss injections, and acne scar treatments. | Confirmed | Google Business Profile, checked Aug 14, 2026 | | Location info | Hours | Mon to Fri 9:00 AM to 6:00 PM · Sat to Sun Closed | Confirmed | Google Business Profile, checked Aug 14, 2026 | | Location info | Name | True Dermatology | Confirmed | Google Business Profile, checked Aug 14, 2026 | | Location info | Phone | (626) 635-1688 | Confirmed | Google Business Profile, checked Aug 14, 2026 | | Hours | Monday | 9:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Aug 14, 2026 | | Hours | Tuesday | 9:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Aug 14, 2026 | | Hours | Wednesday | 9:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Aug 14, 2026 | | Hours | Thursday | 9:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Aug 14, 2026 | | Hours | Friday | 9:00 AM to 6:00 PM | Confirmed | Google Business Profile, checked Aug 14, 2026 | | Hours | Saturday | Closed | Confirmed | Google Business Profile, checked Aug 14, 2026 | | Hours | Sunday | Closed | Confirmed | Google Business Profile, checked Aug 14, 2026 | | Services | Service | Acne blue light | Confirmed | Business website, checked Sep 18, 2026 | | Services | Service | Chemical peels | Confirmed | Business website, checked Sep 18, 2026 | | Services | Service | Hair loss lasers | Confirmed | Business website, checked Sep 18, 2026 | | Services | Service | Hair loss oral | Confirmed | Business website, checked Sep 18, 2026 | | Services | Service | Hair loss topicals | Confirmed | Business website, checked Sep 18, 2026 | | Services | Service | Keloid removal | Confirmed | Business website, checked Sep 18, 2026 | | Services | Service | Microneedling | Confirmed | Business website, checked Sep 18, 2026 | | Services | Service | Mohs surgery | Confirmed | Business website, checked Sep 18, 2026 | | Services | Service | Mole removal | Confirmed | Business website, checked Sep 18, 2026 | | Services | Service | Molluscum contagiosum removal | Confirmed | Business website, checked Sep 18, 2026 | | Services | Service | Skin cancer surgery | Confirmed | Business website, checked Sep 18, 2026 | | Services | Service | Skin tag removal | Confirmed | Business website, checked Sep 18, 2026 | | Services | Service | True hair injections tm | Confirmed | Business website, checked Sep 18, 2026 | | Services | Service | Wart removal | Confirmed | Business website, checked Sep 18, 2026 | | Links | Facebook | https://www.facebook.com/truedermmd | Confirmed | Business website, checked Oct 17, 2026 | | Links | Instagram | https://www.instagram.com/truedermmd | Confirmed | Business website, checked Oct 17, 2026 | | Links | Website | https://www.truedermmd.com/clinic/west-covina | Confirmed | Google Business Profile, checked Aug 14, 2026 | | Links | Yelp | https://www.yelp.com/biz/true-dermatology-west-covina | Confirmed | Business website, checked Oct 17, 2026 | ## Services and prices These are the 14 services True Dermatology offers, with the price where we have one and where it came from. | Service | Price | Price mark | Price evidence | Service mark | | --- | --- | --- | --- | --- | | Hair loss lasers | | | | Confirmed | | Hair loss oral | | | | Confirmed | | Skin tag removal | | | | Confirmed | | Mohs surgery | | | | Confirmed | | Skin cancer surgery | | | | Confirmed | | True hair injections tm | | | | Confirmed | | Acne blue light | | | | Confirmed | | Hair loss topicals | | | | Confirmed | | Keloid removal | | | | Confirmed | | Mole removal | | | | Confirmed | | Molluscum contagiosum removal | | | | Confirmed | | Microneedling | | | | Confirmed | | Chemical peels | | | | Confirmed | | Wart removal | | | | Confirmed | ### Known for True Dermatology is best known for the expertise of Dr. Calvin Sung and his effective treatments, particularly in hair loss solutions like Rogaine injections. ## The team Nothing found ## Visiting True Dermatology Address: 820 W Merced Ave, West Covina, CA 91790, USA. Phone: (626) 635-1688. Hours: Mon to Fri 9 AM to 6 PM · Closed Sat to Sun. (Confirmed, Google Business Profile, checked August 14, 2026 at 10:01 PM.) ### Location info from Google Business Profile Business description, written by True Dermatology on its Google Business Profile: "True Dermatology is a double board-certified, dermatologist-led practice with same-day and same-week appointments across the San Gabriel Valley, Los Angeles, and Orange County. Our multilingual providers offer care in English, Spanish, Chinese, Cantonese, Korean, and Vietnamese. Locations: Arcadia, Monterey Park, Los Angeles, West Covina, Glendora, and Anaheim, plus dedicated phototherapy centers at each location for eczema, psoriasis, and vitiligo. We accept nearly all insurance — Medi-Cal, HMO, PPO, commercial, and Medicare — plus affordable self-pay options. We treat acne, skin tags, and hair loss. Cosmetic services include Botox, fillers, chemical peels, hair loss injections, and acne scar treatments." ### When to go Busy times not read yet, back on Scan Day. ### Parking and getting in Nothing found ### Nearby | Place | Type | Distance | | --- | --- | --- | | Señor Burrito Mexican Food | Mexican restaurant | 1 min walk | | Peppe's Pollo | Colombian restaurant | 1 min walk | | Colombia tierra querida | Colombian restaurant | 1 min walk | | Sweety Hut Thai Restaurants | Thai restaurant | 1 min walk | | Glendora Ave and Merced Ave S | Bus stop | 1 min walk | | Hacienda Blvd and Merced Ave N | Bus stop | 2 min walk | ## Reputation 5.0 average across 7 reviews. ### What people like Nothing found ### What people do not like Nothing found ### Press No press story about True Dermatology found yet. ### Awards None named yet. ### Directories Directory listings not read yet. ## Recent updates from True Dermatology True Dermatology hasn't posted an update here yet. ## Questions people ask ### what time does True Dermatology in West Covina actually open? No answer yet ### numbing here, do you have to ask for it? No answer yet ### Ballpark for a visit to a dermatologist in West Covina? No answer yet ### do they do payment plans at True Dermatology? No answer yet ### Worth the hype at True Dermatology? No answer yet ### address for this place, anyone have it? No answer yet ### budget options in West Covina, what is decent No answer yet ### is there parking at True Dermatology or is it street only? No answer yet ### which one, True Dermatology or W Dermatology? No answer yet ### anyone tell me what a consult here involves No answer yet ### Coffee near True Dermatology on Merced? No answer yet ### Booking here, how does it work? No answer yet ### Saturdays at True Dermatology, are they open? No answer yet ### real doctors here, or is it beauticians No answer yet ### discounts for coming back, is that a thing No answer yet ### same day appts, does that ever happen here No answer yet ### best dermatologist in West Covina No answer yet ## What AI gets wrong about True Dermatology We ask Gemini and ChatGPT about True Dermatology. These are the answers that disagree with the record. ChatGPT and Gemini, read by Local AI Registry on Oct 17, 2026. No capture has disagreed with the record yet. ## The AI Score: 57 of 100 The AI Score measures how likely AI engines are to recommend a business, and how accurately. Dermatologists on the registry run 13 to 76. Fair starts at 45, good at 65. True Dermatology scores 57. The same method scores every business on the registry. | Signal | Weight | Score | What it measures | True Dermatology | | --- | --- | --- | --- | --- | | Retrieval grounding | 26 | 100 | 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. | Good | | Off-property attestation | 20 | 41 | 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 | 38 | Whether ChatGPT, Gemini, Perplexity, and AI Overviews name you, and whether they name you for the right service. | Named in 6 of 16 answers that recommended anyone. 6 more named nobody, which is not a loss and is not scored. | | Reviews & response | 12 | 39 | 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. | Poor | | Backlink & citation authority | 8 | 55 | Domain authority and editorial quality of the sources that attest to you. | Fair | | Google Business Profile | 8 | 79 | Required and recommended fields; update cadence. The listing AI pulls from first. | Good | | Speed & mobile | 7 | 52 | Core Web Vitals at the 75th percentile, on a real phone. | Fair | | Content freshness & schema | 5 | 57 | Crawl recency, intent alignment, valid JSON-LD, canonicals. | Fair | Full method: https://localairegistry.com/methodology ## How AI decides what to tell you about a dermatologist 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 dermatologist 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 True Dermatology 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 True Dermatology | | --- | --- | --- | --- | --- | | True Dermatology | MedicalBusiness | #business | https://www.truedermmd.com/clinic/west-covina | Subject of this page | | Microneedling | MedicalProcedure | #service-microneedling | https://en.wikipedia.org/wiki/Collagen_induction_therapy | Service offered | | West Covina, California | City | #city | Nothing found | City True Dermatology 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 dermatologists in West Covina, linked to the lists and towns around it. ### Lists - Best dermatologists in West Covina: https://localairegistry.com/leaderboards/ca/west-covina/dermatologist - Best businesses in West Covina: https://localairegistry.com/leaderboards/ca/west-covina ### 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 True Dermatology. 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:ChIJ6-LXMPfXwoARrIhRQQKT7t4 (accessed Aug 14, 2026) - [2] truedermmd.com, https://www.truedermmd.com/treatment/acne-blue-light (accessed Sep 18, 2026) - [3] truedermmd.com, https://www.truedermmd.com/treatment/chemical-peels (accessed Sep 18, 2026) - [4] truedermmd.com, https://www.truedermmd.com/treatment/hair-loss-lasers (accessed Sep 18, 2026) - [5] truedermmd.com, https://www.truedermmd.com/treatment/hair-loss-oral (accessed Sep 18, 2026) - [6] truedermmd.com, https://www.truedermmd.com/treatment/hair-loss-topicals (accessed Sep 18, 2026) - [7] truedermmd.com, https://www.truedermmd.com/treatment/keloid-removal (accessed Sep 18, 2026) - [8] truedermmd.com, https://www.truedermmd.com/treatment/microneedling (accessed Sep 18, 2026) - [9] truedermmd.com, https://www.truedermmd.com/treatment/mohs-surgery (accessed Sep 18, 2026) - [10] truedermmd.com, https://www.truedermmd.com/treatment/mole-removal (accessed Sep 18, 2026) - [11] truedermmd.com, https://www.truedermmd.com/treatment/molluscum-contagiosum-removal (accessed Sep 18, 2026) - [12] truedermmd.com, https://www.truedermmd.com/treatment/skin-cancer-surgery (accessed Sep 18, 2026) - [13] truedermmd.com, https://www.truedermmd.com/treatment/skin-tag-removal (accessed Sep 18, 2026) - [14] truedermmd.com, https://www.truedermmd.com/treatment/true-hair-injections-tm (accessed Sep 18, 2026) - [15] truedermmd.com, https://www.truedermmd.com/treatment/wart-removal (accessed Sep 18, 2026) - [16] truedermmd.com, https://www.truedermmd.com/clinic/west-covina (accessed Oct 17, 2026)