Quick answers
- Which hospitals does Michael Ansstas work at?
- Medicare's official clinician data lists Michael Ansstas at 3 hospitals: Archbold Memorial Hospital, HSHS St Elizabeth's Hospital and Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael Ansstas see patients?
- Medicare's clinician data lists 3 practice locations, including Thomasville, GA and O Fallon, IL. Call before your visit to confirm the address.
- What is Michael Ansstas's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Allergy/Immunology and Internal Medicine.
- Does Michael Ansstas accept Medicare assignment?
- Yes. Medicare's clinician data says Michael Ansstas 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 Michael Ansstas?
- (229) 227-0045, as listed in official Medicare / NPI Registry data.
- What is Michael Ansstas's NPI number?
- 1851658728. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael Ansstas works
Medicare's Facility Affiliation Data lists Michael Ansstas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Archbold Memorial HospitalThomasville, GA · Acute Care Hospital · CCN 110038
- HSHS St Elizabeth's HospitalO Fallon, IL · Acute Care Hospital · CCN 140187
- Memorial HospitalBelleville, IL · Acute Care Hospital · CCN 140185
Practice locations
Addresses where Michael Ansstas is enrolled with Medicare (CMS data updated 2026-10-02).
- 112 Mimosa DrThomasville, GA 31792 (229) 227‑0045
- 3 Saint Elizabeth BlvdO Fallon, IL 62269 (618) 641‑5803
- 915 Gordon AveThomasville, GA 31792 (229) 228‑2000
Group practices
Medicare enrollment lists Michael Ansstas as a member of these groups (CMS data updated 2026-10-02).
- HSHS Medical Group Inc219 clinicians in the group
- Archbold Medical Group, Inc.81 clinicians in the group
Specialties
- Gastroenterologyprimary
- Allergy/Immunologyalso
- Internal Medicinealso
Other gastroenterologists in Thomasville
Clinicians with the same Medicare primary specialty in Thomasville, GA — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1851658728 |
| 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