William F. Duff, RPA-C
NPI 1780603456ActiveIndividual· Physician Assistant, Medical· Prescott, AZ
Physician Assistant, Medical (RPA-C) with Nuvoair Medical PC, practicing in Prescott, Arizona. Part D covered 154 prescriptions written in 2024, 92% of them generic. Viatris Specialty LLC was the largest of 8 companies reporting payments in 2025, $205.05 in all, mostly food and beverage. Lists Yavapai Regional Medical Center as a hospital affiliation.
Overview
| NPI | 1780603456 |
|---|---|
| Status | Active |
| Entity type | Individual |
| Credential | RPA-C |
| Sole proprietor | No |
| NPI issued | Jul 19, 2006 |
| Last updated in NPPES | Feb 26, 2026 |
| Certified by provider | Feb 26, 2026 |
Specialties and licenses
| Taxonomy | Code | License | State |
|---|---|---|---|
| Physician Assistant, Medical Primary | 363AM0700X | 7868 | AZ |
| Physician Assistant | 363A00000X | 7868 | AZ |
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 (AZ) |
|---|
Part D prescriptions in 2024
| Prescriptions (claims) | 154 · 324 30-day fills |
|---|---|
| Patients | 94 |
| Total drug cost | $5,094 |
| Generic share | 92% of claims |
Education and affiliations
| Graduation year | 1995 |
|---|---|
| Medicare specialty | Physician Assistant |
| Telehealth | Offers telehealth |
Medical group
- Nuvoair Medical PCSaint Louis, MO · 17 clinicians
Hospital affiliation
- Yavapai Regional Medical CenterPrescott, AZ
Industry payments (Open Payments)
- 2025$205.05 · 10 payments from 8 companies
Top paying companies in 2025
| Company | Amount | Payments |
|---|---|---|
| Viatris Specialty LLC | $55.93 | 2 |
| Verona Pharma, Inc. | $34.17 | 1 |
| Astrazeneca Pharmaceuticals LP | $33.53 | 2 |
| Grifols USA, LLC | $18.49 | 1 |
| Genzyme Corporation | $17.54 | 1 |
What the 2025 payments were for
- Food and Beverage$205.05 · 10 payments
Receiving payments does not imply wrongdoing. What Open Payments covers ·original records
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All 26 physician assistants in Prescott · All physician assistants in Arizona