Mary Elizabeth Clark, CRNP
Nurse Practitioner, Family (CRNP) with University of Pittsburgh Physicians, practicing in New Castle, Pennsylvania. Their prescriptions cost Medicare Part D more than their services did: $25,909 for 354 claims, against $3,734 paid for services in 2024. Zoll Services LLC (A/K/A Zoll Lifecor Corp) reported $83.48 in payments in 2025, mostly food and beverage. Lists Upmc Horizon and 1 other hospital as hospital affiliations. A record with the same name and state is on the OIG exclusion list; it carries no NPI, so check it before acting.
Overview
| NPI | 1215435086 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | CRNP |
| Sole proprietor | No |
| NPI issued | Jan 26, 2018 |
| Last updated in NPPES | Jan 25, 2024 |
| Certified by provider | Oct 23, 2023 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | SP028452 | PA |
| Registered Nurse | 163W00000X | RN780193 | PA |
| Registered Nurse | 163W00000X | RN.405714 | OH |
| Nurse Practitioner, Family | 363LF0000X | APRN.CNP.022539 | OH |
Exclusion screening
Possible match: verify before acting. The OIG list has a record with the same name in Pennsylvania, but that record carries no NPI, so it may be a different person or business.
| Matched by | Name on OIG list | Exclusion type | Excluded since | Location |
|---|---|---|---|---|
| Name + state | Mary Ellen P Clark · Nurse/Nurses Aide | 1128b4 | May 20, 1999 | Philadelphia, PA |
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | Possible (name) | See above |
| North Carolina Medicaid · Nov 10, 2026 | No match | — |
| New York OMIG · Nov 10, 2026 | No match | — |
| Ohio Medicaid · Nov 10, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 10, 2026 | No match | — |
| Washington HCA · Nov 10, 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 | 46 |
|---|---|
| Services billed | 64 across 10 procedure codes |
| Paid by Medicare | $3,734 |
Part D prescriptions in 2024
| Prescriptions (claims) | 354 · 580 30-day fills |
|---|---|
| Patients | 202 |
| Total drug cost | $25,909 |
| Generic share | 89% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- University of Pittsburgh PhysiciansPittsburgh, PA · 4,236 clinicians
Hospital affiliations
- Upmc HorizonGreenville, PA
- Upmc JamesonNew Castle, PA
Industry payments (Open Payments)
- 2025$83.48 · 7 payments from 1 company
- 2024$189.60 · 9 payments from 3 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Zoll Services LLC (A/K/A Zoll Lifecor Corp) | $83.48 | 7 |
What the 2025 payments were for
- Food and Beverage$83.48 · 7 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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