Raphael B. Merriman, MD
NPI 1942258728ActiveIndividual· Internal Medicine, Transplant Hepatology· San Francisco, CA
Internal Medicine, Transplant Hepatology (MD) with Sutter Bay Medical Foundation, practicing in San Francisco, California. Their prescriptions cost Medicare Part D more than their services did: $916,799 for 1,662 claims, against $125,569 paid for services in 2024. Cook Medical LLC reported $111.52 in payments in 2025, mostly food and beverage. Lists California Pacific Medical Center- Van Ness Campus and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1942258728 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | May 4, 2006 |
| Last updated in NPPES | Oct 28, 2022 |
| Certified by provider | Oct 28, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Transplant Hepatology Primary | 207RT0003X | 070327 | CA |
| Internal Medicine, Gastroenterology | 207RG0100X | 070327 | 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 - Gastroenterology (CA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 399 |
|---|---|
| Services billed | 1,065 across 21 procedure codes |
| Paid by Medicare | $125,569 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,662 · 2,969 30-day fills |
|---|---|
| Patients | 247 |
| Total drug cost | $916,799 |
| Generic share | 79% of claims |
Education and affiliations
| Graduation year | 1990 |
|---|---|
| Medicare specialty | Gastroenterology |
| Telehealth | Offers telehealth |
Medical group
- Sutter Bay Medical FoundationFremont, CA · 3,829 clinicians
Hospital affiliations
- California Pacific Medical Center- Van Ness CampusSan Francisco, CA
- Sutter Auburn Faith HospitalAuburn, CA
- Sutter Davis HospitalDavis, CA
- Sutter Medical Center, SacramentoSacramento, CA
- Sutter Roseville Medical CenterRoseville, CA
Industry payments (Open Payments)
- 2025$111.52 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Cook Medical LLC | $111.52 | 1 |
What the 2025 payments were for
- Food and Beverage$111.52 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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