Quick answers
- Which hospitals does William Duff work at?
- Medicare's official clinician data lists William Duff at 1 hospital: Yavapai Regional Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William Duff see patients?
- Medicare's clinician data lists 3 practice locations, including Prescott, AZ and Tucson, AZ. Call before your visit to confirm the address.
- What is William Duff's specialty?
- Medicare lists Physician Assistant as the primary specialty.
- Does William Duff accept Medicare assignment?
- Yes. Medicare's clinician data says William Duff accepts Medicare assignment (the Medicare-approved amount as full payment for covered services), as of 2026-10-02. Ask the office to confirm before your visit.
- Does William Duff offer telehealth?
- Medicare's clinician data says William Duff offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for William Duff?
- (833) 688-6247, as listed in official Medicare / NPI Registry data.
- What is William Duff's NPI number?
- 1780603456. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where William Duff works
Medicare's Facility Affiliation Data lists William Duff at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Yavapai Regional Medical CenterPrescott, AZ · Acute Care Hospital · CCN 030012
Practice locations
Addresses where William Duff is enrolled with Medicare (CMS data updated 2026-10-02).
- 2245 E State Route 69Prescott, AZ 86301 (833) 688‑6247
- 3124 Willow Creek RdPrescott, AZ 86301 (928) 371‑4700
- 5723 E 5th StTucson, AZ 85711 (833) 688‑6247
Group practices
Medicare enrollment lists William Duff as a member of this group (CMS data updated 2026-10-02).
- Nuvoair Medical PC17 clinicians in the group
Specialties
- Physician Assistantprimary
Other physician assistants in Prescott
Clinicians with the same Medicare primary specialty in Prescott, AZ — not a recommendation.
Clinician information
| Credential | PA |
|---|---|
| Graduation year | 1995 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1780603456 |
| Corrections | Report an error or suggest an update → |
Most corrections must be made at the source: clinicians update their NPI Registry record (NPPES) and their Medicare enrollment (PECOS); this page follows the next data release.
Sources
- Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
- National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
- NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
- Medicare Care Compare — official Medicare tool to look up clinicians