Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.
NPIDirectory

Dr. Andrew M. Posselt, MD

Individual provider Internal Medicine Physician · NPI 1235193616

Dr. Andrew M. Posselt, MD practises General Surgery in San Francisco, California. Graduated from Perelman School of Med at the University of Pennsylvania in 1993, 33 years ago. Practices with UCSF Medical Group Business Services, a 1,531-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California.

Years since qualifying
33
Trained at
Perelman School of Med at the University of Pennsylvania
Licensed in
CA
In the registry since
2006
Specialties on file
2
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

400 Parnassus Ave
San Francisco, CA 94143-2202
Phone: (415) 353-2318
Fax: (415) 353-8917
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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 G81075 (CA)
Surgery Physician Taxonomy 208600000X · Licence G81075 (CA)

Record details

NPI number1235193616
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedApril 13, 2006
Last updated in NPPESJuly 13, 2026

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Also practisesINTERNAL MEDICINE
Medical schoolPERELMAN SCHOOL OF MED AT THE UNIVERSITY OF PENNSYLVANIA
Graduated 1993 (33 years in practice)
Group practice Ucsf Medical Group Business Services — 1531 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
TelehealthOffers telehealth services
Practice locations2 on file with Medicare

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 patients95
Services billed 176 a service is one billed item, such as a visit, a test or a procedure
Average patient age59

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.

Payments from drug and device companies, 2025

Drug and device makers are required by federal law (the Physician Payments Sunshine Act) to report what they pay or give to clinicians, and CMS publishes the reports as Open Payments. This is the 2025 program year. A report is a record of a payment, not an allegation of anything, and many are small items such as meals. Only general payments are listed here; research payments and ownership or investment interests are reported separately by CMS and are not shown.

Consulting Fee $13,549 2 payments
Travel and Lodging $12,392 4 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $673 8 payments · a meal or drink at a meeting or visit, not a fee

Each amount is the sum of what companies reported for that kind of payment in 2025, rounded to the dollar. Not all of it is income to the clinician: a meal is not a fee, a charitable contribution goes to a charity, and a royalty or an acquisition payment is not a salary.

Check a report, or dispute one, at the source in CMS’s own tool, Open Payments. Corrections go through CMS’s dispute process. This site removes a home address on request and asks for no proof, because that is privacy; it will not remove an accurate payment report on request, because that is a statutory public disclosure.

Practises at

Facilities the CMS Facility Affiliation file lists for this clinician.

Colleagues at UCSF Medical Group Business Services

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 1531 clinicians in the practice; 12 are shown here.

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