Quick answers
- Which hospitals does William R. Sullivan Ii work at?
- Medicare's official clinician data lists William R. Sullivan Ii at 1 hospital: San Carlos Apache Healthcare Corporation. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William R. Sullivan Ii see patients?
- Medicare's clinician data lists 4 practice locations, including Peridot, AZ, Twin Falls, ID and Sierra Vista, AZ. Call before your visit to confirm the address.
- What is William R. Sullivan Ii's specialty?
- Medicare lists Psychiatry as the primary specialty.
- Does William R. Sullivan Ii accept Medicare assignment?
- Yes. Medicare's clinician data says William R. Sullivan Ii 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.
- What is the phone number for William R. Sullivan Ii?
- (928) 475-1400, as listed in official Medicare / NPI Registry data.
- What is William R. Sullivan Ii's NPI number?
- 1154483477. 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 R. Sullivan Ii works
Medicare's Facility Affiliation Data lists William R. Sullivan Ii at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- San Carlos Apache Healthcare CorporationPeridot, AZ · Critical Access Hospital · CCN 031320
Practice locations
Addresses where William R. Sullivan Ii is enrolled with Medicare (CMS data updated 2026-10-02).
- 103 Medicine Way RdPeridot, AZ 85542 (928) 475‑1400
- 228 Shoup Ave WTwin Falls, ID 83301 (208) 814‑7900
- 5100 E Hwy 90 BSierra Vista, AZ 85635 (520) 417‑9729
- 746 N College RdTwin Falls, ID 83301
Group practices
Medicare enrollment lists William R. Sullivan Ii as a member of these groups (CMS data updated 2026-10-02).
- St Lukes Clinic LLC316 clinicians in the group
- San Carlos Apache Healthcare Corporation148 clinicians in the group
Specialties
- Psychiatryprimary
Other psychiatrists in Arizona
Clinicians with the same Medicare primary specialty in Arizona — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Texas Tech University Health Science Center School Of Medicine |
| Graduation year | 1992 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1154483477 |
| 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