Tam Duy Bui, M.D.
Family Medicine Physician · San Francisco, CA
Tam Duy Bui, M.D. is a family medicine physician with a practice address in San Francisco, California, and NPI 1447530746, issued on Aug 18, 2011. Check the license (California A.40047, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Tam Duy Bui
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- A.40047 CA
Self-reported in NPPES; status is on the state search - Practice location
- 439 O'Farrell, San Francisco, CA 94102
- Phone
- (415) 517-0427
- Enumerated
- Aug 18, 2011
- Record last updated
- Aug 18, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (415) 441-7389
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 17,133 in California → Look up another NPI →
Verify Tam Duy Bui in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A.40047Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average family medicine physician in 2024
21 Medicare Part D claims, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D.
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.
Tam Duy Bui among 17,133 family medicine physician records in California
Tam Duy Bui, M.D. 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 2011, is newer than 63% of them.
- NPI issued2011 · 63% of these records are older, 34% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 62% of these records are
- Record last updated2011 · 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).
Family Medicine Physician providers in California
There are 17,133 family medicine physician records in California.
All 17,133 in California → Every provider in San Francisco → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Effiem Abbah, MD, MPHSan Francisco, CA 941021821185133
- Deborah Borne, MDSan Francisco, CA 941021598892580
- Cynthia Clark, M.D.San Francisco, CA 941021487690244
- Firoozeh Dastmalchi, M.D.San Francisco, CA 941021366683732
- Elise Grenier, M.D.San Francisco, CA 941021184634800
- Kelly Henkler, M.D.San Francisco, CA 941021467809335
- Steven HowardSan Francisco, CA 941021114007366
- Clifford LauSan Francisco, CA 941021366874422
Common questions
What is Tam Duy Bui, M.D.'s NPI number?
Tam Duy Bui, M.D.'s National Provider Identifier (NPI) is 1447530746, issued on Aug 18, 2011. An NPI identifies a provider in billing; it is not a license.
Where is Tam Duy Bui, M.D. located?
The NPPES record lists a practice address at 439 O'Farrell, San Francisco, CA, 94102. Phone: (415) 517-0427. Providers update this record themselves, so call before visiting.
How can I verify Tam Duy Bui, M.D.'s license?
NPPES lists California license number A.40047, 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 Tam Duy Bui, M.D. prescribe under Medicare Part D?
In 2024, Tam Duy Bui, M.D. had 21 Medicare Part D claims; 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.