Mariah Elizabeth Shirey, CRNP
NPI 1255165957ActiveIndividual· Nurse Practitioner· Williamsport, PA
Nurse Practitioner (CRNP) with Phoenix Rehabilitation and Health Services Inc and 2 other groups, practicing in Williamsport, Pennsylvania. 53 Medicare patients in 2024, $10,203 paid; nearly all of their 248 Part D prescriptions were generic (92%). Novo Nordisk Inc was the largest of 15 companies reporting payments in 2025, $629.80 in all, mostly food and beverage. Lists Upmc Williamsport as a hospital affiliation.
Overview
| NPI | 1255165957 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNP |
| Sole proprietor | Yes |
| NPI issued | Aug 27, 2024 |
| Last updated in NPPES | Aug 27, 2024 |
| Certified by provider | Aug 27, 2024 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner Primary | 363L00000X | SP029977 | PA |
| Registered Nurse | 163W00000X | RN708877 | 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 | 53 |
|---|---|
| Services billed | 303 across 20 procedure codes |
| Paid by Medicare | $10,203 |
Part D prescriptions in 2024
| Prescriptions (claims) | 248 · 415 30-day fills |
|---|---|
| Patients | 105 |
| Total drug cost | $12,053 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 2024 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Phoenix Rehabilitation and Health Services IncCranberry Twp, PA · 2,800 clinicians
- Susquehanna Physician ServicesWilliamsport, PA · 612 clinicians
- Family Practice Center PCNewport, PA · 361 clinicians
Hospital affiliation
- Upmc WilliamsportWilliamsport, PA
Industry payments (Open Payments)
- 2025$629.80 · 32 payments from 15 companies
- 2024$86.86 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Novo Nordisk Inc | $114.29 | 6 |
| Indivior Inc. | $64.96 | 3 |
| Glaxosmithkline, LLC. | $57.56 | 3 |
| Abbvie Inc. | $56.79 | 3 |
| Lilly USA, LLC | $56.46 | 3 |
What the 2025 payments were for
- Food and Beverage$629.80 · 32 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 68 nurse practitioners in Williamsport · All nurse practitioners in Pennsylvania