Francis Yao, MD
Internal Medicine Physician · San Francisco, CA
Francis Yao, MD is an internal medicine physician with a practice address in San Francisco, California, and NPI 1134177470, issued on May 5, 2006. Check the license on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Francis Yao
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- Practice location
- 350 Parnassus Ave, San Francisco, CA 94143
- Phone
- (415) 353-2318
- Enumerated
- May 5, 2006
- Entity
- Type 1 · individual
Also registered at 350 Parnassus Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Eric Buxton, M.D.Endocrinology, Diabetes & Metabolism Physician1134210362
Verify Francis Yao in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of CaliforniaCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
43% fewer Medicare Part D claims than the average internal medicine physician in 2024
1,593 Medicare Part D claims for 230 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 39% of claims.
Most prescribed
- Vemlidy501 claims
- Entecavir227 claims
- Ursodiol101 claims
- Xifaxan66 claims
- Azathioprine63 claims
- Prednisone58 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.
The Medicare quality score for 2023: 82.3 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $36,222.75
31 payments, mostly food and beverage; the largest payer was Gilead Sciences, Inc.. The 65,274 providers of this specialty with any payment received $2,536.66 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.
5 hospital and facility affiliations
- County OF Santa ClaraSan Jose, CA
- Regents OF The University OF CaliforniaSan Francisco, CA
- Ucsf Dept OF SurgerySan Francisco, CA
- Ucsf Medical Group Business ServicesBurlingame, CA
- University OF California San FranciscoSan Francisco, CA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
1,593 internal medicine physician records list a San Francisco practice address
They are 1,593 of the 38,143 NPPES records with a San Francisco practice address, and 20,403 internal medicine physician records in California.
All 1,593 in San Francisco → All 20,403 in California → Every provider in San Francisco →
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- Samuel Abarte, M.D.Chula Vista, CA1578535498
- Alexander Abary, MDLong Beach, CA1104995919
- Luba Abascal, MDSan Francisco, CA1023180874
- Michael Abate, MDSacramento, CA1548248131
- Wali Abawi, D.O.Joshua Tree, CA1104362268
Common questions
What is Francis Yao, MD's NPI number?
Francis Yao, MD's National Provider Identifier (NPI) is 1134177470, issued on May 5, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Francis Yao, MD located?
The NPPES record lists a practice address at 350 Parnassus Ave, San Francisco, CA, 94143. Phone: (415) 353-2318. Providers update this record themselves, so call before visiting.
How can I verify Francis Yao, MD's license?
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 Francis Yao, MD prescribe under Medicare Part D?
In 2024, Francis Yao, MD had 1,593 Medicare Part D claims for 230 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
What is Francis Yao, MD's Medicare quality score?
The 2023 MIPS final score is 82.3 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.