Quick answers
- Which hospitals does Gregory Bismack work at?
- Medicare's official clinician data lists Gregory Bismack at 5 hospitals: HSHS St Elizabeth's Hospital, OSF Saint Anthony's Health Center, SSM St Clare Health Center, St Joseph's Hospital and Ste Genevieve County Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory Bismack see patients?
- Medicare's clinician data lists 4 practice locations, including Belleville, IL, Bridgeton, MO and Effingham, IL. Call before your visit to confirm the address.
- What is Gregory Bismack's specialty?
- Medicare lists Hospitalist as the primary specialty.
- Does Gregory Bismack accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory Bismack 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 Gregory Bismack?
- (618) 233-2095, as listed in official Medicare / NPI Registry data.
- What is Gregory Bismack's NPI number?
- 1619293149. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Gregory Bismack works
Medicare's Facility Affiliation Data lists Gregory Bismack at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- HSHS St Elizabeth's HospitalO Fallon, IL · Acute Care Hospital · CCN 140187
- OSF Saint Anthony's Health CenterAlton, IL · Acute Care Hospital · CCN 140052
- SSM St Clare Health CenterFenton, MO · Acute Care Hospital · CCN 260081
- St Joseph's HospitalHighland, IL · Critical Access Hospital · CCN 141336
- Ste Genevieve County Memorial HospitalSainte Genevieve, MO · Critical Access Hospital · CCN 261330
Practice locations
Addresses where Gregory Bismack is enrolled with Medicare (CMS data updated 2026-10-02).
- 1021 W E StBelleville, IL 62220 (618) 233‑2095
- 12303 De Paul DrBridgeton, MO 63044 (314) 344‑6000
- 503 N Maple StEffingham, IL 62401 (217) 342‑2121
- 800 Genevieve DrSte Genevieve, MO 63670 (573) 883‑7772
Group practices
Medicare enrollment lists Gregory Bismack as a member of these groups (CMS data updated 2026-10-02).
- Galen Inpatient Physicians PC1,077 clinicians in the group
- Cep America-Illinois Hospitalists, LLP196 clinicians in the group
- Ste Genevieve County Memorial Hospital71 clinicians in the group
- Cep America - Illinois SNF LLP8 clinicians in the group
Specialties
- Hospitalistprimary
Other hospitalists in Belleville
Clinicians with the same Medicare primary specialty in Belleville, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Wayne State University School Of Medicine |
| Graduation year | 2010 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1619293149 |
| 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