John Zerfing, CRNP
NPI 1992303895ActiveIndividual· Nurse Practitioner, Adult Health· York, PA
Nurse Practitioner, Adult Health (CRNP) with Wellspan Medical Group and 1 other group, practicing in York, Pennsylvania. Their prescriptions cost Medicare Part D more than their services did: $4,977,185 for 957 claims, against $2,739 paid for services in 2024. Astrazeneca Pharmaceuticals LP was the largest of 6 companies reporting payments in 2025, $419.46 in all, mostly food and beverage. Lists Gettysburg Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1992303895 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNP |
| Sole proprietor | No |
| NPI issued | Oct 13, 2020 |
| Last updated in NPPES | Apr 29, 2026 |
| Certified by provider | Apr 29, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Adult Health Primary | 363LA2200X | SP022606 | 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 | 28 |
|---|---|
| Services billed | 48 across 3 procedure codes |
| Paid by Medicare | $2,739 |
Part D prescriptions in 2024
| Prescriptions (claims) | 957 · 1,153 30-day fills |
|---|---|
| Patients | 318 |
| Total drug cost | $4,977,185 |
| Generic share | 74% of claims |
Education and affiliations
| Graduation year | 2020 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical groups
- Wellspan Medical GroupEphrata, PA · 2,480 clinicians
- Cancer Care Associates of York, Inc.York, PA · 15 clinicians
Hospital affiliations
- Gettysburg HospitalGettysburg, PA
- Wellspan York HospitalYork, PA
Industry payments (Open Payments)
- 2025$419.46 · 18 payments from 6 companies
- 2024$169.68 · 5 payments from 5 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Astrazeneca Pharmaceuticals LP | $143.05 | 8 |
| Genentech USA, Inc. | $135.14 | 5 |
| Accord Healthcare, Inc. | $88.67 | 1 |
| Iovance Biotherapeutics, Inc. | $20.74 | 2 |
| Pharmacosmos Therapeutics Inc. | $18.35 | 1 |
What the 2025 payments were for
- Food and Beverage$244.07 · 15 payments
- Education$175.39 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 28 adult health nurse practitioners in York · All adult health nurse practitioners in Pennsylvania