Mary Clark Magill, NP
NPI 1194249177ActiveIndividual· Nurse Practitioner, Family· California, MD
Nurse Practitioner, Family (NP) with Medstar Medical Group - Southern Maryland LLC, practicing in California, Maryland. Their prescriptions cost Medicare Part D more than their services did: $18,277 for 228 claims, against $9,951 paid for services in 2024. Exact Sciences Corporation reported $16.43 in payments in 2025, mostly food and beverage. Lists Medstar Saint Mary's Hospital as a hospital affiliation.
Overview
| NPI | 1194249177 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | NP |
| Sole proprietor | Yes |
| NPI issued | Aug 1, 2017 |
| Last updated in NPPES | Aug 19, 2026 |
| Certified by provider | Aug 19, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Family Primary | 363LF0000X | R130834 | MD |
| Nurse Practitioner | 363L00000X | R130834 | MD |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| 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 (DC); Practitioner - Nurse Practitioner (MD) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 110 |
|---|---|
| Services billed | 236 across 20 procedure codes |
| Paid by Medicare | $9,951 |
Part D prescriptions in 2024
| Prescriptions (claims) | 228 · 472 30-day fills |
|---|---|
| Patients | 75 |
| Total drug cost | $18,277 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Medical group
- Medstar Medical Group - Southern Maryland LLCHollywood, MD · 245 clinicians
Hospital affiliation
- Medstar Saint Mary's HospitalLeonardtown, MD
Industry payments (Open Payments)
- 2025$16.43 · 1 payment from 1 company
- 2024$110.01 · 5 payments from 4 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Exact Sciences Corporation | $16.43 | 1 |
What the 2025 payments were for
- Food and Beverage$16.43 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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