Marc Alan Simon, MD
NPI 1346215449ActiveIndividual· Internal Medicine, Advanced Heart Failure and Transplant Cardiology· San Francisco, CA
Internal Medicine, Advanced Heart Failure and Transplant Cardiology (MD) in San Francisco, California, trained at University of Maryland School of Medicine (class of 1998). Their prescriptions cost Medicare Part D more than their services did: $3,452,234 for 568 claims, against $39,280 paid for services in 2024. Merck Sharp & Dohme LLC was the largest of 9 companies reporting payments in 2025, $23,894 in all, mostly consulting fees.
Overview
| NPI | 1346215449 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Feb 22, 2006 |
| Last updated in NPPES | Oct 14, 2021 |
| Certified by provider | Oct 14, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Advanced Heart Failure and Transplant Cardiology Primary | 207RA0001X | C171930 | CA |
| Specialist | 174400000X | MD420221 | PA |
| Internal Medicine, Advanced Heart Failure and Transplant Cardiology | 207RA0001X | MD420221 | PA |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | MD420221 | PA |
| Internal Medicine, Cardiovascular Disease | 207RC0000X | C171930 | CA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Advanced Heart Failure and Transplant Cardiology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 151 |
|---|---|
| Services billed | 1,009 across 24 procedure codes |
| Paid by Medicare | $39,280 |
Part D prescriptions in 2024
| Prescriptions (claims) | 568 · 887 30-day fills |
|---|---|
| Patients | 85 |
| Total drug cost | $3,452,234 |
| Generic share | 53% of claims |
Education and affiliations
| Medical school | University of Maryland School of Medicine |
|---|---|
| Graduation year | 1998 |
| Medicare specialty | Advanced Heart Failure And Transplant Cardiology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical groups
- University of California San FranciscoSan Francisco, CA · 1,839 clinicians
- UCSF Medical Group Business ServicesSan Francisco, CA · 1,598 clinicians
- Regents of the University of CaliforniaSan Francisco, CA · 732 clinicians
Hospital affiliations
- UCSF Health St. Mary's HospitalSan Francisco, CA
- UCSF Medical CenterSan Francisco, CA
Industry payments (Open Payments)
- 2025$23,894 · 48 payments from 9 companies
- 2024$21,267 · 40 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $16,248 | 23 |
| Actelion Pharmaceuticals US, Inc. | $5,455 | 5 |
| Chiesi USA, Inc. | $959.65 | 3 |
| United Therapeutics Corporation | $756.89 | 10 |
| Kerecis Limited | $196.63 | 1 |
What the 2025 payments were for
- Consulting Fee$18,630 · 3 payments
- Travel and Lodging$2,655 · 9 payments
- Food and Beverage$2,609 · 36 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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