Quick answers
- Which hospitals does William G. Ryan work at?
- Medicare's official clinician data lists William G. Ryan at 1 hospital: HonorHealth Four Peaks Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William G. Ryan see patients?
- Medicare's clinician data lists 2 practice locations, including Mesa, AZ and Tempe, AZ. Call before your visit to confirm the address.
- What is William G. Ryan's specialty?
- Medicare lists Certified Registered Nurse Anesthetist (CRNA) as the primary specialty.
- Does William G. Ryan accept Medicare assignment?
- Yes. Medicare's clinician data says William G. Ryan 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 G. Ryan?
- (800) 402-0881, as listed in official Medicare / NPI Registry data.
- What is William G. Ryan's NPI number?
- 1295215416. 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 G. Ryan works
Medicare's Facility Affiliation Data lists William G. Ryan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- HonorHealth Four Peaks Medical CenterMesa, AZ · Acute Care Hospital · CCN 030121
Practice locations
Addresses where William G. Ryan is enrolled with Medicare (CMS data updated 2026-10-02).
- 1301 S Crimson RdMesa, AZ 85209 (800) 402‑0881
- 1500 S Mill AveTempe, AZ 85281 (800) 402‑0881
Group practices
Medicare enrollment lists William G. Ryan as a member of this group (CMS data updated 2026-10-02).
- Greater Anesthesia Solutions206 clinicians in the group
Specialties
Find other clinicians: Certified Registered Nurse Anesthetist (CRNA), Arizona →
Other nurse anesthetists in Mesa
Clinicians with the same Medicare primary specialty in Mesa, AZ — not a recommendation.
Clinician information
| Credential | CNA |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1295215416 |
| 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