Quick answers
- Which hospitals does William Thom work at?
- Medicare's official clinician data lists William Thom at 5 hospitals: Alton Memorial Hospital, Anderson Hospital, Community Hospital of Staunton, Jersey Community Hospital and OSF Saint Anthony's Health Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does William Thom see patients?
- Medicare's clinician data lists 2 practice locations, including Jerseyville, IL and Maryville, IL. Call before your visit to confirm the address.
- What is William Thom's specialty?
- Medicare lists Anesthesiology as the primary specialty, and also Pain Management.
- Does William Thom accept Medicare assignment?
- Yes. Medicare's clinician data says William Thom 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 Thom?
- (618) 498-6402, as listed in official Medicare / NPI Registry data.
- What is William Thom's NPI number?
- 1225015456. 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 Thom works
Medicare's Facility Affiliation Data lists William Thom at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Alton Memorial HospitalAlton, IL · Acute Care Hospital · CCN 140002
- Anderson HospitalMaryville, IL · Acute Care Hospital · CCN 140289
- Community Hospital of StauntonStaunton, IL · Critical Access Hospital · CCN 141306
- Jersey Community HospitalJerseyville, IL · Acute Care Hospital · CCN 140059
- OSF Saint Anthony's Health CenterAlton, IL · Acute Care Hospital · CCN 140052
Practice locations
Addresses where William Thom is enrolled with Medicare (CMS data updated 2026-10-02).
- 400 Maple Summit RdJerseyville, IL 62052 (618) 498‑6402
- 6800 State Route 162Maryville, IL 62062
Group practices
Medicare enrollment lists William Thom as a member of these groups (CMS data updated 2026-10-02).
- Anderson Medical Group LLC136 clinicians in the group
- Jersey Community Hospital61 clinicians in the group
Specialties
- Anesthesiologyprimary
- Pain Managementalso
Other anesthesiologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 2001 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1225015456 |
| 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