Francis Yao is a Gastroenterology physician affiliated with University of California, San Francisco. OpenAlex indexes 176 publications with 13,732 citations (h-index 56). By OpenAlex citation count, this profile ranks in the top 10% of Gastroenterology profiles in the findmyKOL directory.
Overview
Scholarship
indexed output and impact (OpenAlex)Distinct works indexed by OpenAlex, matched via ORCID.
Total citations across indexed works.
Hirsch index, productivity × impact (OpenAlex).
Clinical & industry
trials, payments and federal fundingContact
The practice address and phone this provider lists in the federal NPPES (CMS) registry.
Practice address
350 Parnassus Ave
San Francisco, CA 941430001
Telephone
415-353-2318Registry record last updated 11 Sept 2025.
Industry payments
3 companies reported payments to CMS in program years 2021 onward. These are public disclosures, not judgments. The latest:
- Gilead Sciences, Inc.Program year202511 payments$12,980openpaymentsdata.cms.gov ↗
- Boston Scientific CorporationProgram year202510 payments$12,156openpaymentsdata.cms.gov ↗
- Gilead Sciences, Inc.Program year202422 payments$20,794openpaymentsdata.cms.gov ↗
Payment records matched to this physician's NPI in CMS Open Payments, program years 2021 onward.
Medicare prescribing footprint (2024)
The drugs this prescriber writes for Medicare patients, grouped by drug class and therapeutic area. Every percentage is a share of their total prescribing, so you can see what they prescribe most. These are proportions, not patient counts or dollar amounts. No condition is inferred: the claims record what was prescribed, never why.
Anti-infectives
56.3%Nucleoside and nucleotide reverse transcriptase inhibitors38.5%Vemlidy94%Tenofovir Disoproxil Fumarate7%Part D<11 patientsHepatitis B Virus Nucleoside Analog Reverse Transcriptase Inhibitor17.9%Entecavir91%Baraclude9%Part D<11 patientsMetabolism & gastrointestinal
26%Bile Acid7.2%Ursodiol100%Part D≥29 patientsProton pump inhibitor6.2%Omeprazole55%Pantoprazole Sodium45%Part D≥16 patients+ 3 more classes in this area
Cardiovascular
7.8%Statin3.5%Atorvastatin Calcium100%Part D≥13 patientsAldosterone antagonist (MRA)1.7%Spironolactone100%Part D<11 patients+ 2 more classes in this area
Drug classes come from the WHO ATC and U.S. National Library of Medicine (RxClass) classifications; prescribing counts come from the CMS Medicare Part D Prescribers file. Each drug is counted once, under its primary class. Medicare fee-for-service only, so no Medicare Advantage, commercial, or pediatric prescribing is included. CMS publishes this data about 17 months after the fact.
Publications
Matched to this physician's OpenAlex author record; most-cited works shown first.
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Elyse Foster, MD
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A basic profile from our physician directory: identity and practice contact from the federal NPPES registry, research from OpenAlex, trials from ClinicalTrials.gov, payments from CMS Open Payments — shown itemized where we have matched records, as a count where we only have a total. This person hasn't been through our full identity-adjudication pipeline yet, so funding, congress activity and public presence aren't shown. Absence of a section means “not yet looked,” never “none found.”