William O. Hartzell, M.D.
NPI 1417938986ActiveIndividual· Internal Medicine, Pulmonary Disease· Westborough, MA
Internal Medicine, Pulmonary Disease (M.D.) in Westborough, Massachusetts, trained at University of Virginia School of Medicine (class of 1992). Their prescriptions cost Medicare Part D more than their services did: $667,025 for 1,074 claims, against $51,171 paid for services in 2024. Astrazeneca Pharmaceuticals LP reported $15.99 in payments in 2025, mostly education.
Overview
| NPI | 1417938986 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | M.D. |
| Sole proprietor | No |
| NPI issued | Nov 10, 2005 |
| Last updated in NPPES | Feb 18, 2019 |
| Reactivated | Feb 18, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine, Pulmonary Disease Primary | 207RP1001X | 0101239857 | VA |
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 - Pulmonary Disease (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 170 |
|---|---|
| Services billed | 666 across 14 procedure codes |
| Paid by Medicare | $51,171 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,074 · 1,561 30-day fills |
|---|---|
| Patients | 154 |
| Total drug cost | $667,025 |
| Generic share | 54% of claims |
Education and affiliations
| Medical school | University of Virginia School of Medicine |
|---|---|
| Graduation year | 1992 |
| Medicare specialty | Pulmonary Disease |
| Secondary specialties | Critical Care (Intensivists) |
Hospital affiliation
- Inova Fair Oaks HospitalFairfax, VA
Industry payments (Open Payments)
- 2025$15.99 · 1 payment from 1 company
- 2024$33.78 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $15.99 | 1 |
What the 2025 payments were for
- Education$15.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other Internal Medicine, Pulmonary Disease providers in Westborough
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