Quick answers
- Which hospitals does James R. Clark work at?
- Medicare's official clinician data lists James R. Clark at 1 hospital: Advocate Good Samaritan Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does James R. Clark see patients?
- Medicare's clinician data lists 1 practice location in Libertyville, IL. Call before your visit to confirm the address.
- What is James R. Clark's specialty?
- Medicare lists Gastroenterology as the primary specialty.
- Does James R. Clark accept Medicare assignment?
- Yes. Medicare's clinician data says James R. Clark 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 James R. Clark offer telehealth?
- Medicare's clinician data says James R. Clark offers telehealth services. Ask the office which visits can be done by video or phone.
- What is the phone number for James R. Clark?
- (630) 952-1400, as listed in official Medicare / NPI Registry data.
- What is James R. Clark's NPI number?
- 1588640650. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where James R. Clark works
Medicare's Facility Affiliation Data lists James R. Clark at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Advocate Good Samaritan HospitalDowners Grove, IL · Acute Care Hospital · CCN 140288
Practice locations
Addresses where James R. Clark is enrolled with Medicare (CMS data updated 2026-10-02).
- 1880 W Winchester Rd, Suite 201Libertyville, IL 60048 (630) 952‑1400
Group practices
Medicare enrollment lists James R. Clark as a member of this group (CMS data updated 2026-10-02).
- Gi Partners of Illinois PLLC39 clinicians in the group
Specialties
- Gastroenterologyprimary
Other gastroenterologists in Libertyville
Clinicians with the same Medicare primary specialty in Libertyville, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Illinois College Of Med (chi/peor/rock/chm-Urb) |
| Graduation year | 1990 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| Telehealth | Offers telehealth services |
| NPI (National Provider Identifier) | 1588640650 |
| 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