Ole-Petter Riksfjord Hamnvik, M.D.
NPI 1063603678ActiveIndividual· Internal Medicine, Endocrinology, Diabetes & Metabolism· Boston, MA
Internal Medicine, Endocrinology, Diabetes & Metabolism (M.D.) with Brigham and Womens Physicians Organization Inc, practicing in Boston, Massachusetts. Their prescriptions cost Medicare Part D more than their services did: $261,739 for 687 claims, against $19,410 paid for services in 2024. Merck Sharp & Dohme LLC reported $250.00 in payments in 2025, mostly consulting fees. Lists Brigham and Women Faulkner Hospital and 3 other hospitals as hospital affiliations.
Overview
| NPI | 1063603678 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Aug 8, 2007 |
| Last updated in NPPES | Apr 2, 2026 |
| Certified by provider | Apr 2, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Endocrinology, Diabetes & Metabolism Primary | 207RE0101X | 239696 | MA |
| Internal Medicine | 207R00000X | 239696 | MA |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Nov 10, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 11, 2026 | No match | — |
| New York OMIG · Nov 11, 2026 | No match | — |
| Ohio Medicaid · Nov 11, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 11, 2026 | No match | — |
| Washington HCA · Nov 11, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Endocrinology (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 168 |
|---|---|
| Services billed | 342 across 11 procedure codes |
| Paid by Medicare | $19,410 |
Part D prescriptions in 2024
| Prescriptions (claims) | 687 · 1,616 30-day fills |
|---|---|
| Patients | 105 |
| Total drug cost | $261,739 |
| Generic share | 60% of claims |
Education and affiliations
| Graduation year | 2005 |
|---|---|
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
| Telehealth | Offers telehealth |
Medical group
- Brigham and Womens Physicians Organization IncBoston, MA · 2,994 clinicians
Hospital affiliations
- Brigham and Women Faulkner HospitalJamaica Plain, MA
- Brigham and Women's HospitalBoston, MA
- Massachusetts General HospitalBoston, MA
- Newton-Wellesley HospitalNewton, MA
Industry payments (Open Payments)
- 2025$250.00 · 1 payment from 1 company
- 2024$250.00 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Merck Sharp & Dohme LLC | $250.00 | 1 |
What the 2025 payments were for
- Consulting Fee$250.00 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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