Theresa Diem-Hang Bui, DO
Psychiatry Physician · San Francisco, CA
Theresa Diem-Hang Bui, DO is a psychiatry physician with a practice address in San Francisco, California, and NPI 1144576414, issued on Jul 24, 2012. Check the license (California 20A15617, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Theresa Diem-Hang Bui
- Credential
- DO
- Primary taxonomy
- Psychiatry Physician 2084P0800X
- License numbers
- 20A15617 CA
P6147 TX
Self-reported in NPPES; status is on the state search - Practice location
- 490 Post St Ste 1043, San Francisco, CA 94102
- Phone
- (925) 282-1778
- Enumerated
- Jul 24, 2012
- Record last updated
- Apr 10, 2024
- Fax
- (415) 296-5299
- Entity
- Type 1 · individual
8 nearest psychiatry physician records → All 8,673 in California → Look up another NPI →
Also registered at 490 Post St Ste 1043
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Theresa Diem-Hang Bui in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license 20A15617Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average psychiatry physician in 2024
17 Medicare Part D claims, against an average of 1,000 among the 35,054 providers of this specialty who prescribed in Part D. Brand-name drugs were 82% of 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.
Theresa Diem-Hang Bui among 8,673 psychiatry physician records in California
Theresa Diem-Hang Bui, DO 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 2012, is newer than 66% of them.
- NPI issued2012 · 66% of these records are older, 31% newer
- In a Medicare fileYes · 67% of these records are
- In the CMS Doctors and Clinicians fileNo · 38% of these records are
- Record last updated2024 · 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).
763 psychiatry physician records list a practice address in San Francisco
They are 763 of the 38,143 NPPES records with a practice address in San Francisco, and 8,673 psychiatry physician records in California.
All 8,673 in California → Every provider in San Francisco → Psychiatry Physician nationwide →
The 8 psychiatry physician records with the nearest ZIP codes
- Yates Brown, M.D.San Francisco, CA 941021639275704
- George Collyer, MDSan Francisco, CA 941021215025713
- Peter Forster, M.D.San Francisco, CA 941021609975309
- Ravi Hariprasad, MDSan Francisco, CA 941021992874036
- George Harrison, MDSan Francisco, CA 941021487684965
- Naomi Lam, MDSan Francisco, CA 941021346310083
- William Quick, MDSan Francisco, CA 941021659438950
- Gwendolyn Rothman, MDSan Francisco, CA 941021770525370
Common questions
What is Theresa Diem-Hang Bui, DO's NPI number?
Theresa Diem-Hang Bui, DO's National Provider Identifier (NPI) is 1144576414, issued on Jul 24, 2012. An NPI identifies a provider in billing; it is not a license.
Where is Theresa Diem-Hang Bui, DO located?
The NPPES record lists a practice address at 490 Post St Ste 1043, San Francisco, CA, 94102. Phone: (925) 282-1778. Providers update this record themselves, so call before visiting.
How can I verify Theresa Diem-Hang Bui, DO's license?
NPPES lists California license number 20A15617, 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 Theresa Diem-Hang Bui, DO prescribe under Medicare Part D?
In 2024, Theresa Diem-Hang Bui, DO had 17 Medicare Part D claims; 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.