Quick answers
- Which hospitals does Gregory R. Gambla work at?
- Medicare's official clinician data lists Gregory R. Gambla at 5 hospitals: Advocate Sherman Hospital, Northwestern Medicine Central Dupage Hospital, Northwestern Medicine McHenry, Saint Joseph Hospital-Elgin and St Alexius Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Gregory R. Gambla see patients?
- Medicare's clinician data lists 1 practice location in Elgin, IL. Call before your visit to confirm the address.
- What is Gregory R. Gambla's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Gregory R. Gambla accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory R. Gambla 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 R. Gambla?
- (847) 888-1300, as listed in official Medicare / NPI Registry data.
- What is Gregory R. Gambla's NPI number?
- 1801832167. 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 R. Gambla works
Medicare's Facility Affiliation Data lists Gregory R. Gambla at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Advocate Sherman HospitalElgin, IL · Acute Care Hospital · CCN 140030
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · CCN 140242
- Northwestern Medicine McHenryMcHenry, IL · Acute Care Hospital · CCN 140116
- Saint Joseph Hospital-ElginElgin, IL · Acute Care Hospital · CCN 140217
- St Alexius Medical CenterHoffman Estates, IL · Acute Care Hospital · CCN 140290
Practice locations
Addresses where Gregory R. Gambla is enrolled with Medicare (CMS data updated 2026-10-02).
- 745 Fletcher Dr, Suite 202Elgin, IL 60123 (847) 888‑1300
Group practices
Medicare enrollment lists Gregory R. Gambla as a member of this group (CMS data updated 2026-10-02).
- Illinois Gastroenterology Group LLC115 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Elgin
Clinicians with the same Medicare primary specialty in Elgin, IL — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Midwestern University, Chicago College Of Osteopathic Med |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1801832167 |
| 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