Mark McNamara, M.D.
NPI 1275640294ActiveIndividual· Internal Medicine, Hematology & Oncology· Pasadena, CA
Internal Medicine, Hematology & Oncology (M.D.) in Pasadena, California, licensed in CA, with an NPI issued in August 2006. Part D covered 15 prescriptions written in 2024, 80% of them generic. Merck Sharp & Dohme LLC reported $25.70 in payments in 2025, mostly education.
Overview
| NPI | 1275640294 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 24, 2006 |
| Last updated in NPPES | Nov 27, 2023 |
| Certified by provider | Sep 29, 2020 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Hematology & Oncology Primary | 207RH0003X | G62456 | CA |
| Internal Medicine | 207R00000X | G62456 | CA |
| Internal Medicine, Hematology | 207RH0000X | G62456 | CA |
| Internal Medicine, Medical Oncology | 207RX0202X | G62456 | 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 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Hematology/Oncology (CA) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 15 · 32 30-day fills |
|---|---|
| Total drug cost | $5,381 |
| Generic share | 80% of claims |
Industry payments (Open Payments)
- 2025$25.70 · 1 payment from 1 company
- 2024$18.09 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $25.70 | 1 |
What the 2025 payments were for
- Education$25.70 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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