Quick answers
- Which hospitals does John Williams work at?
- Medicare's official clinician data lists John Williams at 5 hospitals: Banner Baywood Medical Center, Banner Ironwood Medical Center, Dignity Health Arizona General Hospital, HonorHealth Four Peaks Medical Center and Mercy Gilbert Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John Williams see patients?
- Medicare's clinician data lists 1 practice location in Mesa, AZ. Call before your visit to confirm the address.
- What is John Williams's specialty?
- Medicare lists Urology as the primary specialty.
- Does John Williams accept Medicare assignment?
- Yes. Medicare's clinician data says John Williams 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 John Williams?
- (480) 219-1010, as listed in official Medicare / NPI Registry data.
- What is John Williams's NPI number?
- 1942797477. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John Williams works
Medicare's Facility Affiliation Data lists John Williams at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Banner Baywood Medical CenterMesa, AZ · Acute Care Hospital · CCN 030088
- Banner Ironwood Medical CenterQueen Creek, AZ · Acute Care Hospital · CCN 030130
- Dignity Health Arizona General HospitalMesa, AZ · Acute Care Hospital · CCN 030139
- HonorHealth Four Peaks Medical CenterMesa, AZ · Acute Care Hospital · CCN 030121
- Mercy Gilbert Medical CenterGilbert, AZ · Acute Care Hospital · CCN 030119
Practice locations
Addresses where John Williams is enrolled with Medicare (CMS data updated 2026-10-02).
- 6116 E Arbor Ave, Suite 108Mesa, AZ 85206 (480) 219‑1010
Group practices
Medicare enrollment lists John Williams as a member of this group (CMS data updated 2026-10-02).
- East Valley Urology Center PLC9 clinicians in the group
Specialties
- Urologyprimary
Other urologists in Mesa
Clinicians with the same Medicare primary specialty in Mesa, AZ — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Tennessee, Hsc, College Of Medicine |
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1942797477 |
| 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