Quick answers
- Which hospitals does Stephen T. Ang work at?
- Medicare's official clinician data lists Stephen T. Ang at 2 hospitals: Good Samaritan Regional Health Center and SSM Health St Mary's Hospital -Centralia. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Stephen T. Ang see patients?
- Medicare's clinician data lists 2 practice locations, including Centralia, IL. Call before your visit to confirm the address.
- What is Stephen T. Ang's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Stephen T. Ang accept Medicare assignment?
- Yes. Medicare's clinician data says Stephen T. Ang 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 Stephen T. Ang?
- (618) 532-1688, as listed in official Medicare / NPI Registry data.
- What is Stephen T. Ang's NPI number?
- 1346251071. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Stephen T. Ang works
Medicare's Facility Affiliation Data lists Stephen T. Ang at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Good Samaritan Regional Health CenterMount Vernon, IL · Acute Care Hospital · CCN 140046
- SSM Health St Mary's Hospital -CentraliaCentralia, IL · Acute Care Hospital · CCN 140034
Practice locations
Addresses where Stephen T. Ang is enrolled with Medicare (CMS data updated 2026-10-02).
- 1054 M L King DrCentralia, IL 62801
- 1054 Martin Luther King Dr, Suite 12Centralia, IL 62801 (618) 532‑1688
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of California, Geffen School Of Medicine |
| Graduation year | 1991 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1346251071 |
| 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