John Hong Yan Wu, MD
Internal Medicine Physician · San Francisco, CA
John Hong Yan Wu, MD is an internal medicine physician with a practice address in San Francisco, California, and NPI 1619099272, issued on Apr 4, 2007. Check the license (California A29670, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- John Hong Yan Wu
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- A29670 CA
Self-reported in NPPES; status is on the state search - Practice location
- 929 Clay Street, San Francisco, CA 94108
- Phone
- (415) 981-0303
- Enumerated
- Apr 4, 2007
- Record last updated
- Jul 26, 2010 (not updated in 16 years: call before relying on the address or phone)
- Fax
- (415) 981-0515
- Medicaid ID
- 00A296700 CA
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 17,696 in California → Look up another NPI →
Also registered at 929 Clay Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shu Wing Chan, MDInternal Medicine Physician1497828586
Verify John Hong Yan Wu in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license A29670Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
28% fewer Medicare Part D claims than the average internal medicine physician in 2024
2,294 Medicare Part D claims for 262 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. 27 claims were for opioids.
Most prescribed
- Atorvastatin Calcium202 claims
- Clotrimazole-Betamethasone177 claims
- Cephalexin103 claims
- Metformin Hcl99 claims
- Bisoprolol-Hydrochlorothiazide91 claims
- Prednisone83 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.
John Hong Yan Wu among 17,696 internal medicine physician records in California
John Hong Yan Wu, MD is one of 17,696 internal medicine physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 44% of them.
- NPI issued2007 · 44% of these records are older, 44% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2010 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,318 internal medicine physician records list a practice address in San Francisco
They are 1,318 of the 38,143 NPPES records with a practice address in San Francisco, and 17,696 internal medicine physician records in California.
All 17,696 in California → Every provider in San Francisco → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Mai-Sie Chan, MDSan Francisco, CA 941081326136557
- Shu Wing Chan, MDSan Francisco, CA 941081497828586
- Gustin Ho, M.D.San Francisco, CA 941081437189966
- Jerome Jew, M.D.San Francisco, CA 941081235143702
- Chuk Kwan, M.D.San Francisco, CA 941081336101500
- Lisa Law, M.D.San Francisco, CA 941081518030543
- Kerri Masutto, M.D.San Francisco, CA 941081780913442
- Justin Quock, M.D., F.A.C.P.San Francisco, CA 941081699792663
Common questions
What is John Hong Yan Wu, MD's NPI number?
John Hong Yan Wu, MD's National Provider Identifier (NPI) is 1619099272, issued on Apr 4, 2007. An NPI identifies a provider in billing; it is not a license.
Where is John Hong Yan Wu, MD located?
The NPPES record lists a practice address at 929 Clay Street, San Francisco, CA, 94108. Phone: (415) 981-0303. Providers update this record themselves, so call before visiting.
How can I verify John Hong Yan Wu, MD's license?
NPPES lists California license number A29670, 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 John Hong Yan Wu, MD prescribe under Medicare Part D?
In 2024, John Hong Yan Wu, MD had 2,294 Medicare Part D claims for 262 beneficiaries; the average among internal medicine physician prescribers was 3,176. 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.