Mattie Joy Testroet, ARNP
NPI 1356723399ActiveIndividual· Nurse Practitioner· Waterloo, IA
Nurse Practitioner (ARNP) with Allen Memorial Hospital Corporation, practicing in Waterloo, Iowa. Their prescriptions cost Medicare Part D more than their services did: $2,775,804 for 1,712 claims, against $44,298 paid for services in 2024. Incyte Corporation was the largest of 3 companies reporting payments in 2025, $132.23 in all, mostly food and beverage. Lists Allen Hospital and 4 other hospitals as hospital affiliations.
Overview
| NPI | 1356723399 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | ARNP |
| Sole proprietor | No |
| NPI issued | Jun 26, 2015 |
| Last updated in NPPES | May 13, 2025 |
| Certified by provider | May 13, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | A122571 | IA |
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 - Nurse Practitioner (IA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 429 |
|---|---|
| Services billed | 1,250 across 7 procedure codes |
| Paid by Medicare | $44,298 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,712 · 2,736 30-day fills |
|---|---|
| Patients | 415 |
| Total drug cost | $2,775,804 |
| Generic share | 87% of claims |
Education and affiliations
| Graduation year | 2015 |
|---|---|
| Medicare specialty | Nurse Practitioner |
| Telehealth | Offers telehealth |
Medical group
- Allen Memorial Hospital CorporationWaterloo, IA · 157 clinicians
Hospital affiliations
- Allen HospitalWaterloo, IA
- Buchanan County Health CenterIndependence, IA
- Community Memorial Hospital Medical CenterSumner, IA
- Grundy County Memorial HospitalGrundy Center, IA
- Waverly Health CenterWaverly, IA
Industry payments (Open Payments)
- 2025$132.23 · 5 payments from 3 companies
- 2024$226.19 · 8 payments from 6 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Incyte Corporation | $57.73 | 3 |
| Gilead Sciences, Inc. | $54.33 | 1 |
| Janssen Biotech, Inc. | $20.17 | 1 |
What the 2025 payments were for
- Food and Beverage$132.23 · 5 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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