Nathan P. Vassill, PA-C
NPI 1528371473ActiveIndividual· Physician Assistant· Somersworth, NH
Physician Assistant (PA-C) with Wentworth Douglass Physician Corporation, practicing in Somersworth, New Hampshire. 346 Medicare patients in 2024, $34,181 paid; nearly all of their 80 Part D prescriptions were generic (99%). Boston Scientific Corporation was the largest of 2 companies reporting payments in 2025, $179.51 in all, mostly food and beverage. Lists Wentworth-Douglass Hospital as a hospital affiliation.
Overview
| NPI | 1528371473 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | PA-C |
| Sole proprietor | No |
| NPI issued | Jul 21, 2010 |
| Last updated in NPPES | Nov 15, 2014 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant Primary | 363A00000X | — | — |
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 (NH) |
|---|---|
| Accepts assignment | Yes (participating) |
Medicare services in 2024
| Medicare patients | 346 |
|---|---|
| Services billed | 1,255 across 46 procedure codes |
| Paid by Medicare | $34,181 |
Part D prescriptions in 2024
| Prescriptions (claims) | 80 · 81 30-day fills |
|---|---|
| Patients | 55 |
| Total drug cost | $428.69 |
| Generic share | 99% of claims |
Education and affiliations
| Graduation year | 2010 |
|---|---|
| Medicare specialty | Physician Assistant |
Medical group
- Wentworth Douglass Physician CorporationDover, NH · 429 clinicians
Hospital affiliation
- Wentworth-Douglass HospitalDover, NH
Industry payments (Open Payments)
- 2025$179.51 · 3 payments from 2 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Boston Scientific Corporation | $165.01 | 2 |
| Collegium Pharmaceutical, Inc. | $14.50 | 1 |
What the 2025 payments were for
- Food and Beverage$179.51 · 3 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 22 physician assistants in Somersworth · All physician assistants in New Hampshire