Gregory Ganzer, D.O.
NPI 1326163890ActiveIndividual· Dermatology· Wheeling, WV
Dermatology (D.O.) in Wheeling, West Virginia, trained at Philadelphia College of Osteopathic Medicine (class of 1987). Their prescriptions cost Medicare Part D more than their services did: $808,755 for 1,386 claims, against $7,182 paid for services in 2024. Amgen Inc. was the largest of 2 companies reporting payments in 2025, $61.29 in all, mostly food and beverage.
Overview
| NPI | 1326163890 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | D.O. |
| Sole proprietor | Yes |
| NPI issued | Mar 21, 2007 |
| Last updated in NPPES | Jul 8, 2007 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Dermatology Primary | 207N00000X | 1159 | WV |
| Dermatology | 207N00000X | 34005620 | OH |
| Dermatology | 207N00000X | OS006564L | PA |
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 - Dermatology (OH); Practitioner - Dermatology (WV) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 48 |
|---|---|
| Services billed | 172 across 26 procedure codes |
| Paid by Medicare | $7,182 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,386 · 1,450 30-day fills |
|---|---|
| Patients | 399 |
| Total drug cost | $808,755 |
| Generic share | 89% of claims |
Education and affiliations
| Medical school | Philadelphia College of Osteopathic Medicine |
|---|---|
| Graduation year | 1987 |
| Medicare specialty | Dermatology |
Medical group
- Ganzer - Hahn Dermatology Associates, PLLCWheeling, WV · 12 clinicians
Hospital affiliations
- Trinity Medical Ctr East &trinity Medical Ctr WestSteubenville, OH
- Wheeling Hospital, IncWheeling, WV
Industry payments (Open Payments)
- 2025$61.29 · 4 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Amgen Inc. | $53.11 | 3 |
| Mayne Pharma Commercial LLC | $8.18 | 1 |
What the 2025 payments were for
- Food and Beverage$61.29 · 4 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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