Quick answers
- Which hospitals does Ilysa R. Diamond work at?
- Medicare's official clinician data lists Ilysa R. Diamond at 3 hospitals: Parkview Dekalb Hospital, Parkview Regional Medical Center and Rush Oak Park Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Ilysa R. Diamond see patients?
- Medicare's clinician data lists 2 practice locations, including Oak Park, IL and Fort Wayne, IN. Call before your visit to confirm the address.
- What is Ilysa R. Diamond's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does Ilysa R. Diamond accept Medicare assignment?
- Yes. Medicare's clinician data says Ilysa R. Diamond 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 Ilysa R. Diamond?
- (708) 613-4417, as listed in official Medicare / NPI Registry data.
- What is Ilysa R. Diamond's NPI number?
- 1356596332. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Ilysa R. Diamond works
Medicare's Facility Affiliation Data lists Ilysa R. Diamond at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Parkview Dekalb HospitalAuburn, IN · Acute Care Hospital · CCN 150045
- Parkview Regional Medical CenterFort Wayne, IN · Acute Care Hospital · CCN 150021
- Rush Oak Park HospitalOak Park, IL · Acute Care Hospital · CCN 140063
Practice locations
Addresses where Ilysa R. Diamond is enrolled with Medicare (CMS data updated 2026-10-02).
- 1010 Lake St, Suite 424Oak Park, IL 60301 (708) 613‑4417
- 11104 Parkview Circle Dr, Suite 310Fort Wayne, IN 46845 (260) 266‑8840
Group practices
Medicare enrollment lists Ilysa R. Diamond as a member of this group (CMS data updated 2026-10-02).
- Parkview Health System Inc1,377 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Lake Erie College Of Osteopathic Medicine, Erie |
| Graduation year | 1998 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1356596332 |
| 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