Thinh Chau, MD
Dermatology Physician · Los Alamitos, CA
Thinh Chau, MD is a dermatology physician with a practice address in Los Alamitos, California, and NPI 1811448251, issued on Oct 20, 2016. Check the license (California A187393, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Thinh Chau
- Credential
- MD
- Primary taxonomy
- Dermatology Physician 207N00000X
- License numbers
- A187393 CA
187393 CA
LP04899 RI
Self-reported in NPPES; status is on the state search - Practice location
- 4281 Katella Ave Ste 220, Los Alamitos, CA 90720
- Phone
- (562) 252-0173
- Enumerated
- Oct 20, 2016
- Record last updated
- Aug 27, 2024
- Fax
- (949) 783-2845
- Medicare enrollment
- Enrolled (PECOS I20230918002989); accepts Medicare assignment
- Medical or professional school
- University Of California, Davis School Of Medicine, 2019
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 2,083 in California → Look up another NPI →
Also registered at 4281 Katella Ave Ste 220
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Heather Patz, PA-CPhysician Assistant1255573234
Verify Thinh Chau in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A187393Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
31% fewer Medicare Part D claims than the average dermatology physician in 2024
552 Medicare Part D claims for 251 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims.
Most prescribed
- Fluorouracil116 claims
- Ketoconazole66 claims
- Clobetasol Propionate56 claims
- Triamcinolone Acetonide53 claims
- Calcipotriene46 claims
- Mupirocin37 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $1,293.59
21 payments; by number, the most common kind was food and beverage; the largest payer was Dermavant Sciences, Inc. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- J Robert West MD IncLos Alamitos, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Thinh Chau among 2,083 dermatology physician records in California
Thinh Chau, MD is one of 2,083 dermatology physician records with a practice address in California. 83% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2016, is newer than 80% of them.
- NPI issued2016 · 80% of these records are older, 17% newer
- In a Medicare fileYes · 83% of these records are
- In the CMS Doctors and Clinicians fileYes · 70% of these records are
- Graduated2019 · median 2006 among the 1,450 with a school on file
- Record last updated2024 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in California
There are 2,083 dermatology physician records in California.
All 2,083 in California → Every provider in Los Alamitos → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Cole Fulwider, M.D.Los Alamitos, CA 907201033188560
- Karyn HaitzLos Alamitos, CA 907201962932384
- Laura King, M.D.Los Alamitos, CA 907201487623948
- Mark Maida, MDLos Alamitos, CA 907201144378175
- Michael Tabibian, M.D.Los Alamitos, CA 907201366470338
- Michael Castro, MDLakewood, CA 907121437180320
- Fredric Rosenberg, M.D.Lakewood, CA 907121295885630
- Julia Alexander, MDHarbor City, CA 907101669531281
Common questions
What is Thinh Chau, MD's NPI number?
Thinh Chau, MD's National Provider Identifier (NPI) is 1811448251, issued on Oct 20, 2016. An NPI identifies a provider in billing; it is not a license.
Where is Thinh Chau, MD located?
The NPPES record lists a practice address at 4281 Katella Ave Ste 220, Los Alamitos, CA, 90720. Phone: (562) 252-0173. Providers update this record themselves, so call before visiting.
How can I verify Thinh Chau, MD's license?
NPPES lists California license number A187393, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Thinh Chau, MD prescribe under Medicare Part D?
In 2024, Thinh Chau, MD had 552 Medicare Part D claims for 251 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.