Anthony Chan, DO
Family Medicine Physician · Downey, CA
Anthony Chan, DO is a family medicine physician with a practice address in Downey, California, and NPI 1831849405, issued on Mar 26, 2022. Check the license (California 20A21812, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Anthony Chan
- Credential
- DO
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 20A21812 CA
Self-reported in NPPES; status is on the state search - Practice location
- 11500 Brookshire Ave Ofc Downey, Downey, CA 90241
- Phone
- (562) 904-5000
- Enumerated
- Mar 26, 2022
- Record last updated
- Sep 8, 2025
- Medicare enrollment
- Enrolled (PECOS I20241015003215); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Also registered at 11500 Brookshire Ave Ofc Downey
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Termeh Khoshniat, DOStudent in an Organized Health Care Education/Training Program1629838305
Verify Anthony Chan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A21812Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
73% fewer Medicare Part D claims than the average family medicine physician in 2024
962 Medicare Part D claims for 348 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium75 claims
- Lisinopril64 claims
- Amlodipine Besylate53 claims
- Levothyroxine Sodium39 claims
- Albuterol Sulfate Hfa32 claims
- Gabapentin31 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.
Bills Medicare through one group practice
- Pih Health PhysiciansSanta Fe Springs, CA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Anthony Chan among 17,133 family medicine physician records in California
Anthony Chan, DO is one of 17,133 family medicine physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2022, is newer than 94% of them.
- NPI issued2022 · 94% of these records are older, 3% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 62% of these records are
- Graduated2022 · median 2005 among the 10,652 with a school on file
- Record last updated2025 · 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 207Q00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
65 family medicine physician records list a practice address in Downey
They are 65 of the 3,607 NPPES records with a practice address in Downey, and 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in Downey → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Matthew Blazon Yee, DODowney, CA 902411710043328
- Sherie Carnegie, D ODowney, CA 902411821013772
- Simon Chang, M.D.Downey, CA 902411760594097
- Andrew Chao, D.O.Downey, CA 902411780621755
- Thilan Fernando, M.D.Downey, CA 902411316146632
- Ole Heggeness, D.O.Downey, CA 902411518911908
- Ragaa Iskarous, M.D.Downey, CA 902411215035274
- Antonio Morquecho, PADowney, CA 902411417173220
Common questions
What is Anthony Chan, DO's NPI number?
Anthony Chan, DO's National Provider Identifier (NPI) is 1831849405, issued on Mar 26, 2022. An NPI identifies a provider in billing; it is not a license.
Where is Anthony Chan, DO located?
The NPPES record lists a practice address at 11500 Brookshire Ave Ofc Downey, Downey, CA, 90241. Phone: (562) 904-5000. Providers update this record themselves, so call before visiting.
How can I verify Anthony Chan, DO's license?
NPPES lists California license number 20A21812, 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 Anthony Chan, DO prescribe under Medicare Part D?
In 2024, Anthony Chan, DO had 962 Medicare Part D claims for 348 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.