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

Dr. Mary Eleanor Margaretten, MD

Individual provider Rheumatology Physician · NPI 1588802706

Dr. Mary Eleanor Margaretten, MD practises Rheumatology in San Francisco, California. Graduated from University of California, San Francisco School of Medicine in 2003, 23 years ago. Practices with City and County of San Francisco, a 369-clinician group, works from 2 locations and accepts Medicare assignment. Licensed in California.

Years since qualifying
23
Trained at
University of California, San Francisco School of Medicine
Licensed in
CA
In the registry since
2009
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

3333 California St Ste #270
San Francisco, CA 94143-0001
Phone: (415) 476-2965
Fax: (415) 476-9030
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (1)

  • 1001 Potrero Avenue, San Francisco, CA 94110-3518 — (628) 206-4777

Specialties & licences

Rheumatology Physician (primary) Taxonomy 207RR0500X · Licence A90714 (CA)
Internal Medicine Physician Taxonomy 207R00000X · Licence A90714 (CA)

Record details

NPI number1588802706
Entity typeIndividual (Type 1)
GenderFemale
Credentials MD
Sole proprietorYes
NPI enumeratedJanuary 26, 2009
Last updated in NPPESApril 28, 2026
Certification dateApril 28, 2026

Medicare enrollment

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

Medicare specialtyRHEUMATOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF CALIFORNIA, SAN FRANCISCO SCHOOL OF MEDICINE
Graduated 2003 (23 years in practice)
Group practice City And County Of San Francisco — 369 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 patients13
Services billed 24 a service is one billed item, such as a visit, a test or a procedure
Average patient age74

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.

Education $60 1 payment · educational material or training, 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. Those with a page here are linked.

Colleagues at City and County of San Francisco

Clinicians the CMS Doctors & Clinicians file lists under the same group practice. CMS counts 369 clinicians in the practice; 12 are shown here.

Other providers in San Francisco