Margret Lynette Callahan
NPI 1144195892ActiveIndividual· Nurse Practitioner, Acute Care· Greenville, SC
Nurse Practitioner, Acute Care in Greenville, South Carolina, licensed in SC, with an NPI issued in October 2025. Enrolled in Medicare as practitioner - nurse practitioner.
Overview
| NPI | 1144195892 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Sole proprietor | No |
| NPI issued | Oct 10, 2025 |
| Last updated in NPPES | Jan 14, 2026 |
| Certified by provider | Jan 14, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Nurse Practitioner, Acute Care Primary | 363LA2100X | 30891 | SC |
Exclusion screening
| List | Result | Details |
|---|---|---|
| HHS-OIG LEIE · Oct 9, 2026 | No match | Checked by NPI and by name + state |
| North Carolina Medicaid · Nov 4, 2026 | No match | — |
| New York OMIG · Nov 4, 2026 | No match | — |
| Ohio Medicaid · Nov 4, 2026 | No match | — |
| Pennsylvania Medicheck · Nov 4, 2026 | No match | — |
| Washington HCA · Nov 4, 2026 | No match | — |
Official OIG search · How matching works ·Bulk check a roster
Medicare
| Enrollment (PECOS) | Enrolled Practitioner - Nurse Practitioner (SC) |
|---|
Education and affiliations
| Graduation year | 2025 |
|---|---|
| Medicare specialty | Nurse Practitioner |
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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