Quick answers
- Which hospitals does Theodore S. Thomas work at?
- Medicare's official clinician data lists Theodore S. Thomas at 2 hospitals: Barnes Jewish Hospital and Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Theodore S. Thomas see patients?
- Medicare's clinician data lists 2 practice locations, including Shiloh, IL and Belleville, IL. Call before your visit to confirm the address.
- What is Theodore S. Thomas's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Theodore S. Thomas accept Medicare assignment?
- Yes. Medicare's clinician data says Theodore S. Thomas 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 Theodore S. Thomas?
- (618) 607-1340, as listed in official Medicare / NPI Registry data.
- What is Theodore S. Thomas's NPI number?
- 1326359837. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Theodore S. Thomas works
Medicare's Facility Affiliation Data lists Theodore S. Thomas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Barnes Jewish HospitalSaint Louis, MO · Acute Care Hospital · CCN 260032
- Memorial HospitalBelleville, IL · Acute Care Hospital · CCN 140185
Practice locations
Addresses where Theodore S. Thomas is enrolled with Medicare (CMS data updated 2026-10-02).
- 1418 Cross St, Suite 180Shiloh, IL 62269 (618) 607‑1340
- 4500 Memorial DrBelleville, IL 62226 (618) 233‑7750
Group practices
Medicare enrollment lists Theodore S. Thomas as a member of this group (CMS data updated 2026-10-02).
- Washington University Physicians in Illinois Inc175 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Missouri, Columbia School Of Medicine |
| Graduation year | 2010 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1326359837 |
| 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