Quick answers
- Where does Gregory S. Rauch see patients?
- Medicare's clinician data lists 2 practice locations, including Chicago, IL. Call before your visit to confirm the address.
- What is Gregory S. Rauch's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Gregory S. Rauch accept Medicare assignment?
- Yes. Medicare's clinician data says Gregory S. Rauch 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 Gregory S. Rauch?
- (773) 388-1600, as listed in official Medicare / NPI Registry data.
- What is Gregory S. Rauch's NPI number?
- 1912921297. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Practice locations
Addresses where Gregory S. Rauch is enrolled with Medicare (CMS data updated 2026-10-02).
- 1525 E 55th St, Suite 201Chicago, IL 60615 (773) 388‑1600
- 6500 N Clark StChicago, IL 60626 (773) 388‑1600
Group practices
Medicare enrollment lists Gregory S. Rauch as a member of this group (CMS data updated 2026-10-02).
- Howard Brown Health Center52 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | Baylor College Of Medicine |
| Graduation year | 2002 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1912921297 |
| 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
- 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