Quick answers
- Which hospitals does William J. Butler work at?
- Medicare's official clinician data lists William J. Butler at 1 hospital: Providence St Mary Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William J. Butler see patients?
- Medicare's clinician data lists 2 practice locations, including Apple Valley, CA and Yucaipa, CA. Call before your visit to confirm the address.
- What is William J. Butler's specialty?
- Medicare lists General Surgery as the primary specialty.
- Does William J. Butler accept Medicare assignment?
- Yes. Medicare's clinician data says William J. Butler 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 J. Butler?
- (407) 335-6950, as listed in official Medicare / NPI Registry data.
- What is William J. Butler's NPI number?
- 1265724553. 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 J. Butler works
Medicare's Facility Affiliation Data lists William J. Butler at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Providence St Mary Medical CenterApple Valley, CA · Acute Care Hospital · CCN 050300
Practice locations
Addresses where William J. Butler is enrolled with Medicare (CMS data updated 2026-10-02).
- 18523 Corwin Rd, Suite AApple Valley, CA 92307 (407) 335‑6950
- 33404 James Stewart CirYucaipa, CA 92399 (407) 335‑6950
Group practices
Medicare enrollment lists William J. Butler as a member of this group (CMS data updated 2026-10-02).
- Paul J Wisniewski DO Inc19 clinicians in the group
Specialties
- General Surgeryprimary
Other general surgeons in Apple Valley
Clinicians with the same Medicare primary specialty in Apple Valley, CA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Louisiana State University School Of Medicine In Shreveport |
| Graduation year | 2011 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1265724553 |
| 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