John T. Larossa, M.D.
NPI 1346217155ActiveIndividual· Specialist· Newton, MA
Specialist (M.D.) in Newton, Massachusetts, trained at Tufts University School of Medicine (class of 1973). Their prescriptions cost Medicare Part D more than their services did: $827,916 for 2,697 claims, against $82,037 paid for services in 2024.
Overview
| NPI | 1346217155 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Mar 1, 2006 |
| Last updated in NPPES | Jul 13, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Specialist Primary | 174400000X | 36773 | 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 | 380 |
|---|---|
| Services billed | 10,679 across 8 procedure codes |
| Paid by Medicare | $82,037 |
Part D prescriptions in 2024
| Prescriptions (claims) | 2,697 · 5,905 30-day fills |
|---|---|
| Patients | 307 |
| Total drug cost | $827,916 |
| Generic share | 56% of claims |
Education and affiliations
| Medical school | Tufts University School of Medicine |
|---|---|
| Graduation year | 1973 |
| Medicare specialty | Endocrinology |
| Secondary specialties | Internal Medicine |
Hospital affiliations
- Brigham and Women's HospitalBoston, MA
- Newton-Wellesley HospitalNewton, MA
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All 25 Specialist providers in Newton · All Specialist providers in Massachusetts