Chau Ton-That, D.O.
Psychiatry Physician · Westminster, CA
Chau Ton-That, D.O. is a psychiatry physician with a practice address in Westminster, California, and NPI 1205902301, issued on Nov 28, 2006. Check the license (California 20A7177, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Chau Ton-That
- Credential
- D.O.
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License number
- 20A7177 CA
Self-reported in NPPES; status is on the state search - Practice location
- 9533 Bolsa Ave, Westminster, CA 92683
- Phone
- (714) 531-8720
- Enumerated
- Nov 28, 2006
- Record last updated
- Apr 26, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (714) 531-5794
- Medicaid ID
- 00AX71770 CA
- Medicare enrollment
- Enrolled (PECOS I20040623000658); accepts Medicare assignment
- Medical or professional school
- College Of Osteo Med Of The Pacific At Pomona, 1992
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Verify Chau Ton-That in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A7177Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9.9 times the Medicare Part D claims of the average psychiatry physician in 2024
9,934 Medicare Part D claims for 563 beneficiaries, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 6% of claims.
Most prescribed
- Trazodone Hcl1,208 claims
- Sertraline Hcl1,205 claims
- Quetiapine Fumarate894 claims
- Olanzapine704 claims
- Aripiprazole654 claims
- Mirtazapine477 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: $1,407.62
57 payments; by number, the most common kind was food and beverage; the largest payer was Vanda Pharmaceuticals Inc. The 13,693 providers of this specialty with any payment received $4,954.93 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.
Chau Ton-That among 8,673 psychiatry physician records in California
Chau Ton-That, D.O. is one of 8,673 psychiatry physician records with a practice address in California. 67% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 2% of them.
- NPI issued2006 · 2% of these records are older, 67% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileYes · 38% of these records are
- Graduated1992 · median 2005 among the 3,295 with a school on file
- Record last updated2018 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2084P0800X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatry Physician providers in California
There are 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in Westminster → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Muhammad Anees, M.D.Westminster, CA 926831174961981
- Bong Doan, M.D.Westminster, CA 926831528021516
- Charles Huffman, M.D.Westminster, CA 926831891923173
- Stephanie Kua, MDOrange, CA 926831689979452
- Mai Nguyen, M.D.Westminster, CA 926831629015656
- Vy Nguyen, M.D.Westminster, CA 926831609296177
- Doan Nguyen, MDWestminster, CA 926831336503838
- Angela Sureen, M.D.Westminster, CA 926831457762346
Common questions
What is Chau Ton-That, D.O.'s NPI number?
Chau Ton-That, D.O.'s National Provider Identifier (NPI) is 1205902301, issued on Nov 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Chau Ton-That, D.O. located?
The NPPES record lists a practice address at 9533 Bolsa Ave, Westminster, CA, 92683. Phone: (714) 531-8720. Providers update this record themselves, so call before visiting.
How can I verify Chau Ton-That, D.O.'s license?
NPPES lists California license number 20A7177, 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 Chau Ton-That, D.O. prescribe under Medicare Part D?
In 2024, Chau Ton-That, D.O. had 9,934 Medicare Part D claims for 563 beneficiaries; the average among psychiatry physician prescribers was 1,000. 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.