Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
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Dr. Larissa R Thomas, MD

Individual provider Internal Medicine Physician · NPI 1508192873

Dr. Larissa R Thomas, MD practises Internal Medicine in San Francisco, California. Graduated from Emory University School of Medicine in 2008, 18 years ago. Practices with University of California Sfgh Medical Group, a 571-clinician group and accepts Medicare assignment. Licensed in California.

Years since qualifying
18
Trained at
Emory University School of Medicine
Licensed in
CA
In the registry since
2009
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

1001 Potrero Ave
San Francisco, CA 94110-3518
Phone: (415) 206-8000
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence A111841 (CA)

Record details

NPI number1508192873
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedOctober 21, 2009
Last updated in NPPESJuly 10, 2023
Certification dateJuly 8, 2023

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyINTERNAL MEDICINE
Medical schoolEMORY UNIVERSITY SCHOOL OF MEDICINE
Graduated 2008 (18 years in practice)
Group practice University Of California Sfgh Medical Group — 571 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

Medicare patients and services, 2024

From the CMS Medicare Physician & Other Practitioners file for calendar year 2024. It counts Original Medicare patients only, so a practice that mostly sees Medicare Advantage or privately insured patients looks smaller here than it is.

Medicare patients54
Services billed 140 a service is one billed item, such as a visit, a test or a procedure
Average patient age69

Dollar amounts are not shown. What Medicare pays a practice is gross billings, before staff, premises and tax and including the cost of any drugs it administers, so it is not what a clinician earns.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at University of California Sfgh Medical Group

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 571 clinicians in the practice; 12 are shown here.

Other providers in San Francisco