Quick answers
- Which hospitals does Thomas B. Tan work at?
- Medicare's official clinician data lists Thomas B. Tan at 5 hospitals: Sky Lakes Medical Center, SSM Health Depaul Hospital St Louis, SSM Health Saint Louis University Hospital, SSM St Joseph Health Center and SSM St Joseph Hospital West. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Thomas B. Tan see patients?
- Medicare's clinician data lists 1 practice location in Lake St Louis, MO. Call before your visit to confirm the address.
- What is Thomas B. Tan's specialty?
- Medicare lists Medical Oncology as the primary specialty, and also Hematology/Oncology.
- Does Thomas B. Tan accept Medicare assignment?
- Yes. Medicare's clinician data says Thomas B. Tan 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 Thomas B. Tan?
- (636) 639-8600, as listed in official Medicare / NPI Registry data.
- What is Thomas B. Tan's NPI number?
- 1275528382. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Thomas B. Tan works
Medicare's Facility Affiliation Data lists Thomas B. Tan at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Sky Lakes Medical CenterKlamath Falls, OR · Acute Care Hospital · CCN 380050
- SSM Health Depaul Hospital St LouisBridgeton, MO · Acute Care Hospital · CCN 260104
- SSM Health Saint Louis University HospitalSaint Louis, MO · Acute Care Hospital · CCN 260105
- SSM St Joseph Health CenterSaint Charles, MO · Acute Care Hospital · CCN 260005
- SSM St Joseph Hospital WestLake Saint Louis, MO · Acute Care Hospital · CCN 260200
Practice locations
Addresses where Thomas B. Tan is enrolled with Medicare (CMS data updated 2026-10-02).
- 400 Medical Plz, Suite 100Lake St Louis, MO 63367 (636) 639‑8600
Group practices
Medicare enrollment lists Thomas B. Tan as a member of this group (CMS data updated 2026-10-02).
- SSM Medical Group Inc568 clinicians in the group
Specialties
- Medical Oncologyprimary
- Hematology/Oncologyalso
Other oncologists in Missouri
Clinicians with the same Medicare primary specialty in Missouri — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1275528382 |
| 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