Quick answers
- Which hospitals does Greg J. Gerstner work at?
- Medicare's official clinician data lists Greg J. Gerstner at 5 hospitals: Carle Health Methodist Hospital, OSF Saint Clare Medical Center, OSF Saint Elizabeth MDL Ctr, OSF Saint Paul Medical Center and Saint Francis Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Greg J. Gerstner see patients?
- Medicare's clinician data lists 8 practice locations, including Washington, IL, Normal, IL and Canton, IL. Call before your visit to confirm the address.
- What is Greg J. Gerstner's specialty?
- Medicare lists Hematology/Oncology as the primary specialty.
- Does Greg J. Gerstner accept Medicare assignment?
- Yes. Medicare's clinician data says Greg J. Gerstner 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.
- Does Greg J. Gerstner offer telehealth?
- Medicare's clinician data says Greg J. Gerstner offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Greg J. Gerstner?
- (309) 243-3000, as listed in official Medicare / NPI Registry data.
- What is Greg J. Gerstner's NPI number?
- 1629288659. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Greg J. Gerstner works
Medicare's Facility Affiliation Data lists Greg J. Gerstner at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Carle Health Methodist HospitalPeoria, IL · Acute Care Hospital · CCN 140209
- OSF Saint Clare Medical CenterPrinceton, IL · Critical Access Hospital · CCN 141337
- OSF Saint Elizabeth MDL CtrPeru, IL · Acute Care Hospital · CCN 140110
- OSF Saint Paul Medical CenterMendota, IL · Critical Access Hospital · CCN 141310
- Saint Francis Medical CenterPeoria, IL · Acute Care Hospital · CCN 140067
Practice locations
Addresses where Greg J. Gerstner is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 8; the Medicare profile lists all.
- 110 Eastgate DrWashington, IL 61571 (309) 243‑3000
- 1304 Franklin AveNormal, IL 61761 (309) 454‑1400
- 210 W Walnut StCanton, IL 61520 (309) 647‑5240
- 221 NE Glen Oak AvePeoria, IL 61636 (309) 672‑5522
- 336 Home BlvdGalesburg, IL 61401 (309) 341‑3000
Group practices
Medicare enrollment lists Greg J. Gerstner as a member of this group (CMS data updated 2026-10-02).
- Oncology-Hematology Associates of Central Illinois P C67 clinicians in the group
Specialties
- Hematology/Oncologyprimary
Other hematologist-oncologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Southern Illinois University School Of Medicine |
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1629288659 |
| 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