Mariah Leigh Messina, PA-C
NPI 1285272740ActiveIndividual· Physician Assistant, Medical· Riverhead, NY
Physician Assistant, Medical (PA-C) with Midtown Dermatology Services PC, practicing in Riverhead, New York. Their prescriptions cost Medicare Part D more than their services did: $915,498 for 491 claims, against $25,133 paid for services in 2024. Abbvie Inc. was the largest of 11 companies reporting payments in 2025, $901.53 in all, mostly food and beverage. Lists Suny/Stony Brook University Hospital as a hospital affiliation.
Overview
| NPI | 1285272740 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | Yes |
| NPI issued | Dec 16, 2019 |
| Last updated in NPPES | Dec 16, 2019 |
| Certified by provider | Dec 16, 2019 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | 024517 | NY |
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 (NY) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 72 |
|---|---|
| Services billed | 319 across 16 procedure codes |
| Paid by Medicare | $25,133 |
Part D prescriptions in 2024
| Prescriptions (claims) | 491 · 594 30-day fills |
|---|---|
| Patients | 195 |
| Total drug cost | $915,498 |
| Generic share | 68% of claims |
Education and affiliations
| Graduation year | 2019 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Midtown Dermatology Services PCNew York, NY · 11 clinicians
Hospital affiliation
- Suny/Stony Brook University HospitalStony Brook, NY
Industry payments (Open Payments)
- 2025$901.53 · 49 payments from 11 companies
- 2024$667.69 · 25 payments from 7 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Abbvie Inc. | $173.51 | 10 |
| Janssen Biotech, Inc. | $163.26 | 17 |
| Novartis Pharmaceuticals Corporation | $139.15 | 5 |
| Incyte Corporation | $126.37 | 2 |
| Regeneron Healthcare Solutions, Inc. | $89.19 | 4 |
What the 2025 payments were for
- Food and Beverage$853.54 · 48 payments
- Education$47.99 · 1 payment
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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