Quick answers
- Which hospitals does Robert J. Gresick work at?
- Medicare's official clinician data lists Robert J. Gresick at 5 hospitals: Good Samaritan Regional Hlth Center, SSM Health Depaul Hospital St Louis, SSM Health St Mary's Hospital -Centralia, SSM Health St. Mary's Hospital - Jefferson City and SSM St Clare Health Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Robert J. Gresick see patients?
- Medicare's clinician data lists 3 practice locations, including Mount Vernon, IL, Bridgeton, MO and Centralia, IL. Call before your visit to confirm the address.
- What is Robert J. Gresick's specialty?
- Medicare lists Diagnostic Radiology as the primary specialty.
- Does Robert J. Gresick accept Medicare assignment?
- Yes. Medicare's clinician data says Robert J. Gresick 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 Robert J. Gresick?
- (618) 242-4600, as listed in official Medicare / NPI Registry data.
- What is Robert J. Gresick's NPI number?
- 1992746937. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Robert J. Gresick works
Medicare's Facility Affiliation Data lists Robert J. Gresick 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 Hlth CenterMount Vernon, IL · Acute Care Hospital · CCN 140046
- SSM Health Depaul Hospital St LouisBridgeton, MO · Acute Care Hospital · CCN 260104
- SSM Health St Mary's Hospital -CentraliaCentralia, IL · Acute Care Hospital · CCN 140034
- SSM Health St. Mary's Hospital - Jefferson CityJefferson City, MO · Acute Care Hospital · CCN 260011
- SSM St Clare Health CenterFenton, MO · Acute Care Hospital · CCN 260081
Practice locations
Addresses where Robert J. Gresick is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 Good Samaritan WayMount Vernon, IL 62864 (618) 242‑4600
- 12303 Depaul DrBridgeton, MO 63044 (314) 344‑6350
- 400 N Pleasant AveCentralia, IL 62801 (314) 770‑9393
Group practices
Medicare enrollment lists Robert J. Gresick as a member of these groups (CMS data updated 2026-10-02).
- Ernst Radiology Clinic, Inc20 clinicians in the group
- Ernst Radiology Clinic Inc16 clinicians in the group
Specialties
- Diagnostic Radiologyprimary
Other radiologists in Mount Vernon
Clinicians with the same Medicare primary specialty in Mount Vernon, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Saint Louis University School Of Medicine |
| Graduation year | 1981 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1992746937 |
| 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