Quick answers
- Which hospitals does William C. Thomeier Sr. work at?
- Medicare's official clinician data lists William C. Thomeier Sr. at 5 hospitals: Ahn Wexford Hospital, Allegheny General Hospital, Forbes Hospital, Jefferson Hospital and Saint Vincent Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William C. Thomeier Sr. see patients?
- Medicare's clinician data lists 2 practice locations, including Westfield, NY and Pittsburgh, PA. Call before your visit to confirm the address.
- What is William C. Thomeier Sr.'s specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does William C. Thomeier Sr. accept Medicare assignment?
- Yes. Medicare's clinician data says William C. Thomeier Sr. 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 C. Thomeier Sr.?
- (716) 793-2221, as listed in official Medicare / NPI Registry data.
- What is William C. Thomeier Sr.'s NPI number?
- 1689646770. 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 C. Thomeier Sr. works
Medicare's Facility Affiliation Data lists William C. Thomeier Sr. at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ahn Wexford HospitalWexford, PA · Acute Care Hospital · CCN 390334
- Allegheny General HospitalPittsburgh, PA · Acute Care Hospital · CCN 390050
- Forbes HospitalMonroeville, PA · Acute Care Hospital · CCN 390267
- Jefferson HospitalJefferson Hills, PA · Acute Care Hospital · CCN 390265
- Saint Vincent HospitalErie, PA · Acute Care Hospital · CCN 390009
Practice locations
Addresses where William C. Thomeier Sr. is enrolled with Medicare (CMS data updated 2026-10-02).
- 189 E Main StWestfield, NY 14787 (716) 793‑2221
- 320 E N AvePittsburgh, PA 15212 (412) 359‑2459
Group practices
Medicare enrollment lists William C. Thomeier Sr. as a member of these groups (CMS data updated 2026-10-02).
- Allegheny Clinic Radiology152 clinicians in the group
- Chautauqua Medical Practice PC107 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Westfield
Clinicians with the same Medicare primary specialty in Westfield, NY — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1984 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1689646770 |
| 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