William Harpster, MD
NPI 1689683401ActiveIndividual· Internal Medicine· Washington, DC
Internal Medicine (MD) in Washington, District of Columbia, trained at University of Michigan Homeopathic Medical School (class of 1971). Their prescriptions cost Medicare Part D more than their services did: $287,490 for 1,306 claims, against $328.56 paid for services in 2024.
Overview
| NPI | 1689683401 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Aug 8, 2006 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Internal Medicine Primary | 207R00000X | MD22158 | DC |
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 (DC) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 29 |
|---|---|
| Services billed | 65 across 5 procedure codes |
| Paid by Medicare | $328.56 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,306 · 2,186 30-day fills |
|---|---|
| Patients | 100 |
| Total drug cost | $287,490 |
| Generic share | 79% of claims |
Education and affiliations
| Medical school | University of Michigan Homeopathic Medical School |
|---|---|
| Graduation year | 1971 |
| Medicare specialty | Internal Medicine |
| Secondary specialties | Plastic And Reconstructive Surgery |
Medical group
- Unity Health Care Inc.Washington, DC · 151 clinicians
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 1,030 internal medicine physicians in Washington · All internal medicine physicians in District of Columbia