Ashley Martinmaas, PA-C
NPI 1134578289ActiveIndividual· Physician Assistant· Sioux Falls, SD
Physician Assistant (PA-C) with Avera McKennan, practicing in Sioux Falls, South Dakota. Their prescriptions cost Medicare Part D more than their services did: $802,014 for 289 claims, against $17,012 paid for services in 2024. Daiichi Sankyo Inc. was the largest of 2 companies reporting payments in 2025, $33.55 in all, mostly food and beverage. Lists Avera McKennan Hospital & University Health Center and 1 other hospital as hospital affiliations.
Overview
| NPI | 1134578289 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jun 9, 2016 |
| Last updated in NPPES | Oct 23, 2023 |
| Certified by provider | Oct 23, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
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 - Physician Assistant (SD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 76 |
|---|---|
| Services billed | 297 across 5 procedure codes |
| Paid by Medicare | $17,012 |
Part D prescriptions in 2024
| Prescriptions (claims) | 289 · 300 30-day fills |
|---|---|
| Patients | 74 |
| Total drug cost | $802,014 |
| Generic share | 65% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Avera McKennanSioux Falls, SD · 959 clinicians
Hospital affiliations
- Avera McKennan Hospital & University Health CenterSioux Falls, SD
- Sioux Center HealthSioux Center, IA
Industry payments (Open Payments)
- 2025$33.55 · 2 payments from 2 companies
- 2024$44.59 · 2 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Daiichi Sankyo Inc. | $16.98 | 1 |
| Jazz Pharmaceuticals Inc. | $16.57 | 1 |
What the 2025 payments were for
- Food and Beverage$33.55 · 2 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 255 physician assistants in Sioux Falls · All physician assistants in South Dakota