Amy Fellenz, DNP
NPI 1619534690ActiveIndividual· Nurse Practitioner· Marshfield, WI
Nurse Practitioner (DNP) with McHs Hospitals Inc, practicing in Marshfield, Wisconsin. Their prescriptions cost Medicare Part D more than their services did: $82,064 for 919 claims, against $10,839 paid for services in 2024. Stryker Corporation was the largest of 3 companies reporting payments in 2025, $206.39 in all, mostly food and beverage. Lists Marshfield Medical Center as a hospital affiliation.
Overview
| NPI | 1619534690 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | DNP |
| Sole proprietor | No |
| NPI issued | May 24, 2019 |
| Last updated in NPPES | Mar 25, 2024 |
| Certified by provider | Mar 25, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | 9374 | WI |
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 (WI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 162 |
|---|---|
| Services billed | 277 across 30 procedure codes |
| Paid by Medicare | $10,839 |
Part D prescriptions in 2024
| Prescriptions (claims) | 919 · 1,515 30-day fills |
|---|---|
| Patients | 201 |
| Total drug cost | $82,064 |
| Generic share | 86% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- McHs Hospitals IncMarshfield, WI · 1,197 clinicians
Hospital affiliation
- Marshfield Medical CenterMarshfield, WI
Industry payments (Open Payments)
- 2025$206.39 · 6 payments from 3 companies
- 2024$74.40 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Stryker Corporation | $90.57 | 3 |
| Penumbra, Inc. | $76.05 | 2 |
| Canon Medical Systems USA, Inc. | $39.77 | 1 |
What the 2025 payments were for
- Food and Beverage$206.39 · 6 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 56 nurse practitioners in Marshfield · All nurse practitioners in Wisconsin