Gregory Keith Terpstra, DO
NPI 1952399792ActiveIndividual· Family Medicine· Potosi, MO
Family Medicine (DO) in Potosi, Missouri, trained at University of Michigan Medical School (class of 1993). Their prescriptions cost Medicare Part D more than their services did: $355,558 for 4,224 claims, against $52,824 paid for services in 2024. Vanda Pharmaceuticals Inc. reported $19.49 in payments in 2025, mostly food and beverage.
Overview
| NPI | 1952399792 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DO |
| Sole proprietor | No |
| NPI issued | Oct 6, 2005 |
| Last updated in NPPES | May 13, 2008 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Family Medicine Primary | 207Q00000X | 110137 | MO |
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 - Family Practice (MO) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 181 |
|---|---|
| Services billed | 1,350 across 63 procedure codes |
| Paid by Medicare | $52,824 |
Part D prescriptions in 2024
| Prescriptions (claims) | 4,224 · 9,191 30-day fills |
|---|---|
| Patients | 228 |
| Total drug cost | $355,558 |
| Generic share | 86% of claims |
Education and affiliations
| Medical school | University of Michigan Medical School |
|---|---|
| Graduation year | 1993 |
| Medicare specialty | Family Practice |
Hospital affiliations
- Mercy Hospital JeffersonCrystal City, MO
- Palos Community HospitalPalos Heights, IL
- Parkland Health CenterFarmington, MO
- Parkland Health Center - Bonne TerreBonne Terre, MO
- Washington County Memorial HospitalPotosi, MO
Industry payments (Open Payments)
- 2025$19.49 · 1 payment from 1 company
- 2024$77.33 · 4 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Vanda Pharmaceuticals Inc. | $19.49 | 1 |
What the 2025 payments were for
- Food and Beverage$19.49 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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