Derek K. Groeneweg, PA
NPI 1255888772ActiveIndividual· Physician Assistant, Surgical· Marshall, MN
Physician Assistant, Surgical (PA) with Avera Marshall, practicing in Marshall, Minnesota. 22 Medicare patients in 2024, $2,321 paid; nearly all of their 177 Part D prescriptions were generic (99%). Stryker Corporation was the largest of 2 companies reporting payments in 2025, $69.53 in all, mostly food and beverage. Lists Avera Granite Falls and 2 other hospitals as hospital affiliations.
Overview
| NPI | 1255888772 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA |
| Sole proprietor | No |
| NPI issued | Sep 1, 2016 |
| Last updated in NPPES | Oct 21, 2016 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Surgical Primary | 363AS0400X | 2598 | MN |
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 - Physician Assistant (MN) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 22 |
|---|---|
| Services billed | 38 across 20 procedure codes |
| Paid by Medicare | $2,321 |
Part D prescriptions in 2024
| Prescriptions (claims) | 177 · 177 30-day fills |
|---|---|
| Patients | 95 |
| Total drug cost | $1,379 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Avera MarshallMarshall, MN · 99 clinicians
Hospital affiliations
- Avera Granite FallsGranite Falls, MN
- Avera Marshall Regional Medical CtrMarshall, MN
- Avera Tyler HospitalTyler, MN
Industry payments (Open Payments)
- 2025$69.53 · 2 payments from 2 companies
- 2024$36.16 · 1 payment from 1 company
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $53.71 | 1 |
| Orthofix Medical, Inc. | $15.82 | 1 |
What the 2025 payments were for
- Food and Beverage$69.53 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records