Quick answers
- Which hospitals does Cory L. Conniff work at?
- Medicare's official clinician data lists Cory L. Conniff at 5 hospitals: Advocate Christ Hospital & Medical Center, Northwestern Medicine Central Dupage Hospital, Palos Community Hospital, Silver Cross Hospital and Medical Centers and UChicago Medicine AdventHealth Hinsdale. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Cory L. Conniff see patients?
- Medicare's clinician data lists 4 practice locations, including Oakbrook Terrace, IL, Orland Park, IL and Chicago, IL. Call before your visit to confirm the address.
- What is Cory L. Conniff's specialty?
- Medicare lists Rheumatology as the primary specialty, and also Internal Medicine.
- Does Cory L. Conniff accept Medicare assignment?
- Yes. Medicare's clinician data says Cory L. Conniff 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 Cory L. Conniff?
- (630) 339-5300, as listed in official Medicare / NPI Registry data.
- What is Cory L. Conniff's NPI number?
- 1376539726. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Cory L. Conniff works
Medicare's Facility Affiliation Data lists Cory L. Conniff at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Advocate Christ Hospital & Medical CenterOak Lawn, IL · Acute Care Hospital · CCN 140208
- Northwestern Medicine Central Dupage HospitalWinfield, IL · Acute Care Hospital · CCN 140242
- Palos Community HospitalPalos Heights, IL · Acute Care Hospital · CCN 140062
- Silver Cross Hospital and Medical CentersNew Lenox, IL · Acute Care Hospital · CCN 140213
- UChicago Medicine AdventHealth HinsdaleHinsdale, IL · Acute Care Hospital · CCN 140122
Practice locations
Addresses where Cory L. Conniff is enrolled with Medicare (CMS data updated 2026-10-02).
- 1 S450 Summit Ave, Suite 390Oakbrook Terrace, IL 60181 (630) 339‑5300
- 11540 183rd Pl, Suite NenwOrland Park, IL 60467 (630) 339‑5300
- 1945 W Wilson Ave, Suite 100Chicago, IL 60640 (630) 339‑5300
- 80 W Hillcrest Blvd, Suite 208Schaumburg, IL 60195
Group practices
Medicare enrollment lists Cory L. Conniff as a member of this group (CMS data updated 2026-10-02).
- Greater Chicago Specialty Physicians LLC8 clinicians in the group
Specialties
- Rheumatologyprimary
- Internal Medicinealso
Other rheumatologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1999 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1376539726 |
| 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