Quick answers
- Which hospitals does Christopher G. Chapman work at?
- Medicare's official clinician data lists Christopher G. Chapman at 2 hospitals: Rush Oak Park Hospital and Rush University Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Christopher G. Chapman see patients?
- Medicare's clinician data lists 2 practice locations, including Chicago, IL and Munster, IN. Call before your visit to confirm the address.
- What is Christopher G. Chapman's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does Christopher G. Chapman accept Medicare assignment?
- Yes. Medicare's clinician data says Christopher G. Chapman 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 Christopher G. Chapman offer telehealth?
- Medicare's clinician data says Christopher G. Chapman offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for Christopher G. Chapman?
- (312) 942-5861, as listed in official Medicare / NPI Registry data.
- What is Christopher G. Chapman's NPI number?
- 1235378043. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Christopher G. Chapman works
Medicare's Facility Affiliation Data lists Christopher G. Chapman at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Rush Oak Park HospitalOak Park, IL · Acute Care Hospital · CCN 140063
- Rush University Medical CenterChicago, IL · Acute Care Hospital · CCN 140119
Practice locations
Addresses where Christopher G. Chapman is enrolled with Medicare (CMS data updated 2026-10-02).
- 1725 W Harrison St, Suite 207Chicago, IL 60612 (312) 942‑5861
- 9200 Calumet Ave, Suite E107Munster, IN 46321 (219) 806‑6585
Group practices
Medicare enrollment lists Christopher G. Chapman as a member of this group (CMS data updated 2026-10-02).
- Rush University Medical Group1,551 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Johns Hopkins University School Of Medicine |
| Graduation year | 2008 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1235378043 |
| 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