Margaret Shannon Griffin, PA-C
NPI 1124593249ActiveIndividual· Physician Assistant· Biddeford, ME
Physician Assistant (PA-C) with Mainehealth, practicing in Biddeford, Maine. Their prescriptions cost Medicare Part D more than their services did: $215,481 for 1,940 claims, against $38,328 paid for services in 2024. Lists Mainehealth Maine Medical Center as a hospital affiliation.
Overview
| NPI | 1124593249 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Oct 4, 2018 |
| Last updated in NPPES | Nov 1, 2021 |
| Certified by provider | Nov 1, 2021 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | 1907 | ME |
| Emergency Medicine | 207P00000X | 1408 | NH |
| Physician Assistant | 363A00000X | 1903 | ME |
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 - Physician Assistant (ME) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 309 |
|---|---|
| Services billed | 1,088 across 16 procedure codes |
| Paid by Medicare | $38,328 |
Part D prescriptions in 2024
| Prescriptions (claims) | 1,940 · 4,504 30-day fills |
|---|---|
| Patients | 464 |
| Total drug cost | $215,481 |
| Generic share | 90% of claims |
Education and affiliations
| Graduation year | 2018 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- MainehealthPortland, ME · 2,633 clinicians
Hospital affiliation
- Mainehealth Maine Medical CenterPortland, ME
Industry payments (Open Payments)
None reported for 2025 or 2024.
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
Other physician assistants in Biddeford
- 1043345390
- 1174022453
- 1356018188
- 1437874229
- 1811481807
- 1831727577
- 1023651908
- 1023896115
- 1124586532
- 1235367764
- 1245019017
- 1356078802
All 41 physician assistants in Biddeford · All physician assistants in Maine