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

Dr. Marc Alan Simon, MD

Individual provider Specialist · NPI 1346215449

Dr. Marc Alan Simon, MD practises Advanced Heart Failure and Transplant Cardiology in San Francisco, California. Graduated from University of Maryland School of Medicine in 1998, 28 years ago. Practices with UCSF Medical Group Business Services, a 1,531-clinician group, accepts Medicare assignment and offers telehealth. Licensed in California and Pennsylvania.

Years since qualifying
28
Trained at
University of Maryland School of Medicine
Licensed in
CA, PA
In the registry since
2006
Specialties on file
5
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

535 Mission Bay Blvd S
San Francisco, CA 94143-2156
Phone: (415) 353-3109
Fax: (415) 353-2528
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Advanced Heart Failure and Transplant Cardiology Physician (primary) Taxonomy 207RA0001X · Licence C171930 (CA)
Specialist Taxonomy 174400000X · Licence MD420221 (PA)
Advanced Heart Failure and Transplant Cardiology Physician Taxonomy 207RA0001X · Licence MD420221 (PA)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence MD420221 (PA)
Cardiovascular Disease Physician Taxonomy 207RC0000X · Licence C171930 (CA)

Record details

NPI number1346215449
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedFebruary 22, 2006
Last updated in NPPESOctober 14, 2021
Certification dateOctober 14, 2021

Medicare enrollment

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

Medicare specialtyADVANCED HEART FAILURE AND TRANSPLANT CARDIOLOGY
Also practisesINTERNAL MEDICINE
Medical schoolUNIVERSITY OF MARYLAND SCHOOL OF MEDICINE
Graduated 1998 (28 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 locations5 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 patients151
Services billed 1,009 a service is one billed item, such as a visit, a test or a procedure
Average patient age65

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 $18,630 3 payments
Travel and Lodging $2,655 9 payments · travel or lodging paid or reimbursed, such as to attend a conference
Food and Beverage $2,609 36 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. Those with a page here are linked.

  • Ucsf Medical Center Hospital · San Francisco, CA
  • Ucsf Health St. Mary'S Hospital Hospital · San Francisco, CA

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.

Other providers in San Francisco