Walter Ellsworth Fasenmyer, CRNP
NPI 1558079384ActiveIndividual· Nurse Practitioner, Adult Health· Seneca, PA
Nurse Practitioner, Adult Health (CRNP) with Hematology Oncology Association, practicing in Seneca, Pennsylvania. Their prescriptions cost Medicare Part D more than their services did: $65,950 for 769 claims, against $19,899 paid for services in 2024. Astrazeneca Pharmaceuticals LP reported $123.75 in payments in 2025, mostly food and beverage. Lists Independence Health System Clarion Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1558079384 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNP |
| Sole proprietor | No |
| NPI issued | Nov 10, 2022 |
| Last updated in NPPES | Jul 30, 2026 |
| Certified by provider | Nov 10, 2022 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Adult Health Primary | 363LA2200X | SP026575 | PA |
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 (PA) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 208 |
|---|---|
| Services billed | 493 across 7 procedure codes |
| Paid by Medicare | $19,899 |
Part D prescriptions in 2024
| Prescriptions (claims) | 769 · 931 30-day fills |
|---|---|
| Patients | 186 |
| Total drug cost | $65,950 |
| Generic share | 91% of claims |
Education and affiliations
| Graduation year | 2016 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Hematology Oncology AssociationGreensburg, PA · 76 clinicians
Hospital affiliations
- Independence Health System Clarion HospitalClarion, PA
- Upmc NorthwestSeneca, PA
Industry payments (Open Payments)
- 2025$123.75 · 1 payment from 1 company
- 2024$297.13 · 3 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $123.75 | 1 |
What the 2025 payments were for
- Food and Beverage$123.75 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other adult health nurse practitioners in Seneca
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