Quick answers
- Which hospitals does Theodore R. Addai work at?
- Medicare's official clinician data lists Theodore R. Addai at 5 hospitals: Decatur Memorial Hospital, HSHS Good Shepherd Hospital Inc, Sarah Bush Lincoln Health Center, St Johns Hospital and St Marys Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Theodore R. Addai see patients?
- Medicare's clinician data lists 6 practice locations, including O Fallon, IL, Decatur, IL and Shelbyville, IL. Call before your visit to confirm the address.
- What is Theodore R. Addai's specialty?
- Medicare lists Cardiovascular Disease (Cardiology) as the primary specialty.
- Does Theodore R. Addai accept Medicare assignment?
- Yes. Medicare's clinician data says Theodore R. Addai 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 R. Addai?
- (618) 234-2120, as listed in official Medicare / NPI Registry data.
- What is Theodore R. Addai's NPI number?
- 1912985185. 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 R. Addai works
Medicare's Facility Affiliation Data lists Theodore R. Addai at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Decatur Memorial HospitalDecatur, IL · Acute Care Hospital · CCN 140135
- HSHS Good Shepherd Hospital IncShelbyville, IL · Critical Access Hospital · CCN 141354
- Sarah Bush Lincoln Health CenterMattoon, IL · Acute Care Hospital · CCN 140189
- St Johns HospitalSpringfield, IL · Acute Care Hospital · CCN 140053
- St Marys HospitalDecatur, IL · Acute Care Hospital · CCN 140166
Practice locations
Addresses where Theodore R. Addai is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 6; the Medicare profile lists all.
- 1 Saint Elizabeth BlvdO Fallon, IL 62269 (618) 234‑2120
- 1800 E Lake Shore DrDecatur, IL 62521 (217) 464‑2966
- 1800 E Lake Shore Dr 6th FlrDecatur, IL 62521 (217) 422‑6100
- 200 S Cedar St, Shelby MemorialShelbyville, IL 62565 (217) 774‑3961
- 3 Saint Elizabeth Blvd, Suite 2800O Fallon, IL 62269 (618) 233‑6044
Group practices
Medicare enrollment lists Theodore R. Addai as a member of these groups (CMS data updated 2026-10-02).
- Prairie Cardiovascular Consultants Ltd90 clinicians in the group
- St Marys Hospital Decatur of the Hospital Sisters of the Third Order11 clinicians in the group
Specialties
Find other Cardiovascular Disease (Cardiology) doctors in Illinois →
Other cardiologists in O Fallon
Clinicians with the same Medicare primary specialty in O Fallon, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1985 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912985185 |
| 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