Gregory G. Pierson, MD
NPI 1578552873ActiveIndividual· Emergency Medicine· Warren, PA
Emergency Medicine (MD) in Warren, Pennsylvania, licensed in PA, with an NPI issued in October 2005. 210 Medicare patients in 2024, $27,414 paid; nearly all of their 98 Part D prescriptions were generic (96%).
Overview
| NPI | 1578552873 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | MD |
| Sole proprietor | No |
| NPI issued | Oct 19, 2005 |
| Last updated in NPPES | May 21, 2013 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Emergency Medicine Primary | 207P00000X | MD046966L | PA |
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 - Emergency Medicine (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 210 |
|---|---|
| Services billed | 245 across 10 procedure codes |
| Paid by Medicare | $27,414 |
Part D prescriptions in 2024
| Prescriptions (claims) | 98 · 100 30-day fills |
|---|---|
| Patients | 75 |
| Total drug cost | $1,286 |
| Generic share | 96% of claims |
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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