Quick answers
- Which hospitals does Christine Gresik work at?
- Medicare's official clinician data lists Christine Gresik at 3 hospitals: Copley Memorial Hospital, Edward Hospital and Elmhurst Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Christine Gresik see patients?
- Medicare's clinician data lists 9 practice locations, including Naperville, IL, Elmhurst, IL and Evanston, IL. Call before your visit to confirm the address.
- What is Christine Gresik's specialty?
- Medicare lists Surgical Oncology as the primary specialty.
- Does Christine Gresik accept Medicare assignment?
- Yes. Medicare's clinician data says Christine Gresik 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 Christine Gresik?
- (630) 646-6020, as listed in official Medicare / NPI Registry data.
- What is Christine Gresik's NPI number?
- 1225298045. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Christine Gresik works
Medicare's Facility Affiliation Data lists Christine Gresik at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Copley Memorial HospitalAurora, IL · Acute Care Hospital · CCN 140029
- Edward HospitalNaperville, IL · Acute Care Hospital · CCN 140231
- Elmhurst Memorial HospitalElmhurst, IL · Acute Care Hospital · CCN 140200
Practice locations
Addresses where Christine Gresik is enrolled with Medicare (CMS data updated 2026-10-02). The first 5 of 9; the Medicare profile lists all.
- 120 Spalding Dr, Suite 205and207Naperville, IL 60540 (630) 646‑6020
- 1200 S York Rd, Suite 1120Elmhurst, IL 60126 (630) 527‑3200
- 1200 S York StElmhurst, IL 60126 (331) 221‑6636
- 1200 S York St, Suite 1132Elmhurst, IL 60126 (331) 221‑6180
- 155 E Brush Hill RdElmhurst, IL 60126 (331) 221‑0096
Group practices
Medicare enrollment lists Christine Gresik as a member of this group (CMS data updated 2026-10-02).
- Endeavor Health Medical Group3,350 clinicians in the group
Specialties
- Surgical Oncologyprimary
Other surgical oncologists in Naperville
Clinicians with the same Medicare primary specialty in Naperville, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 2006 |
| Gender (as listed) | Female |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1225298045 |
| 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