William J. Belcastro, M.D.
NPI 1548269251ActiveIndividual· Internal Medicine· Springfield, MA
Internal Medicine (M.D.) in Springfield, Massachusetts, licensed in MA, with an NPI issued in July 2005. Their prescriptions cost Medicare Part D more than their services did: $459,051 for 4,402 claims, against $98,486 paid for services in 2024. Lilly USA, LLC was the largest of 2 companies reporting payments in 2024, $33.88 in all, mostly food and beverage. Lists Baystate Wing Hospital as a hospital affiliation.
Overview
| NPI | 1548269251 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Jul 15, 2005 |
| Last updated in NPPES | Nov 16, 2012 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | 37640 | 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 - Internal Medicine (MA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 231 |
|---|---|
| Services billed | 3,317 across 48 procedure codes |
| Paid by Medicare | $98,486 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,402 · 10,564 30-day fills |
|---|---|
| Patients | 352 |
| Total drug cost | $459,051 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 1971 |
|---|---|
| Medicare specialty | Internal Medicine |
Hospital affiliation
- Baystate Wing HospitalPalmer, MA
Industry payments (Open Payments)
- 2024$33.88 · 2 payments from 2 companies
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Lilly USA, LLC | $17.87 | 1 |
| Abbvie Inc. | $16.01 | 1 |
What the 2024 payments were for
- Food and Beverage$33.88 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 325 internal medicine physicians in Springfield · All internal medicine physicians in Massachusetts