Quick answers
- Which hospitals does David S. Atlas work at?
- Medicare's official clinician data lists David S. Atlas at 1 hospital: Ingalls Memorial Hospital. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does David S. Atlas see patients?
- Medicare's clinician data lists 1 practice location in Flossmoor, IL. Call before your visit to confirm the address.
- What is David S. Atlas's specialty?
- Medicare lists Gastroenterology as the primary specialty, and also Internal Medicine.
- Does David S. Atlas accept Medicare assignment?
- Yes. Medicare's clinician data says David S. Atlas 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 David S. Atlas?
- (708) 957-8750, as listed in official Medicare / NPI Registry data.
- What is David S. Atlas's NPI number?
- 1952375636. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where David S. Atlas works
Medicare's Facility Affiliation Data lists David S. Atlas at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Ingalls Memorial HospitalHarvey, IL · Acute Care Hospital · CCN 140191
Practice locations
Addresses where David S. Atlas is enrolled with Medicare (CMS data updated 2026-10-02).
- 19550 Governors Hwy, Suite 2000Flossmoor, IL 60422 (708) 957‑8750
Group practices
Medicare enrollment lists David S. Atlas as a member of this group (CMS data updated 2026-10-02).
- Ucm Medical Group Sub LLC109 clinicians in the group
Specialties
- Gastroenterologyprimary
- Internal Medicinealso
Other gastroenterologists in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | R Franklin University Of Med & Sci/chicago Medical School |
| Graduation year | 2004 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1952375636 |
| 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