Marissa Brennan, PA-C
NPI 1902324205ActiveIndividual· Physician Assistant, Medical· New London, CT
Physician Assistant, Medical (PA-C) with Middlesex Hospital and 1 other group, practicing in New London, Connecticut. In 2024 Medicare paid $52,463 for 339 patients, and Part D covered 233 of their prescriptions, 88% of them generic. Alexion Pharmaceuticals, Inc. reported $16.27 in payments in 2024, mostly food and beverage. Lists Lawrence & Memorial Hospital and 1 other hospital as hospital affiliations.
Overview
| NPI | 1902324205 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Sep 7, 2017 |
| Last updated in NPPES | Sep 4, 2025 |
| Certified by provider | Sep 4, 2025 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | 3987 | CT |
| Physician Assistant, Medical | 363AM0700X | PA01528 | RI |
| Physician Assistant | 363A00000X | — | — |
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 - Physician Assistant (CT); Practitioner - Physician Assistant (RI) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 339 |
|---|---|
| Services billed | 820 across 11 procedure codes |
| Paid by Medicare | $52,463 |
Part D prescriptions in 2024
| Prescriptions (claims) | 233 · 270 30-day fills |
|---|---|
| Patients | 127 |
| Total drug cost | $14,822 |
| Generic share | 88% of claims |
Education and affiliations
| Graduation year | 2017 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical groups
- Middlesex HospitalMiddletown, CT · 234 clinicians
- Hospital Medicine Associates LLCWesterly, RI · 211 clinicians
Hospital affiliations
- Lawrence & Memorial HospitalNew London, CT
- Middlesex HospitalMiddletown, CT
Industry payments (Open Payments)
- 2024$16.27 · 1 payment from 1 company
Top paying companies in 2024
| Company | Amount | Payments |
|---|---|---|
| Alexion Pharmaceuticals, Inc. | $16.27 | 1 |
What the 2024 payments were for
- Food and Beverage$16.27 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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