Quick answers
- Which hospitals does Maria A. Thomas work at?
- Medicare's official clinician data lists Maria A. Thomas at 3 hospitals: Barnes Jewish Hospital, Barnes-Jewish West County Hospital and Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Maria A. Thomas see patients?
- Medicare's clinician data lists 3 practice locations, including Saint Louis, MO and Alton, IL. Call before your visit to confirm the address.
- What is Maria A. Thomas's specialty?
- Medicare lists Radiation Oncology as the primary specialty.
- Does Maria A. Thomas accept Medicare assignment?
- Yes. Medicare's clinician data says Maria A. 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 Maria A. Thomas?
- (314) 362-9715, as listed in official Medicare / NPI Registry data.
- What is Maria A. Thomas's NPI number?
- 1104089465. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Maria A. Thomas works
Medicare's Facility Affiliation Data lists Maria A. 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
- Barnes-Jewish West County HospitalCreve Coeur, MO · Acute Care Hospital · CCN 260162
- Memorial HospitalBelleville, IL · Acute Care Hospital · CCN 140185
Practice locations
Addresses where Maria A. Thomas is enrolled with Medicare (CMS data updated 2026-10-02).
- 4921 Parkview Pl, Lowr LvlSaint Louis, MO 63110 (314) 362‑9715
- 5225 Mid America PlzSaint Louis, MO 63129 (314) 286‑1911
- 6 Memorial Dr, Bldg CAlton, IL 62002 (618) 433‑7979
Group practices
Medicare enrollment lists Maria A. Thomas as a member of these groups (CMS data updated 2026-10-02).
- Washington University3,029 clinicians in the group
- Washington University Physicians in Illinois Inc175 clinicians in the group
Specialties
- Radiation Oncologyprimary
Other radiation oncologists in Saint Louis
Clinicians with the same Medicare primary specialty in Saint Louis, MO — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 2008 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1104089465 |
| 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