Quick answers
- Which hospitals does Marc A. Singer work at?
- Medicare's official clinician data lists Marc A. Singer at 2 hospitals: Loyola University Medical Center and UChicago Medicine AdventHealth La Grange. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Marc A. Singer see patients?
- Medicare's clinician data lists 2 practice locations, including Maywood, IL and Chesterton, IN. Call before your visit to confirm the address.
- What is Marc A. Singer's specialty?
- Medicare lists Colorectal Surgery (Proctology) as the primary specialty, and also General Surgery.
- Does Marc A. Singer accept Medicare assignment?
- Yes. Medicare's clinician data says Marc A. Singer 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 Marc A. Singer?
- (708) 216-9000, as listed in official Medicare / NPI Registry data.
- What is Marc A. Singer's NPI number?
- 1194732909. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Marc A. Singer works
Medicare's Facility Affiliation Data lists Marc A. Singer at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Loyola University Medical CenterMaywood, IL · Acute Care Hospital · CCN 140276
- UChicago Medicine AdventHealth La GrangeLa Grange, IL · Acute Care Hospital · CCN 140065
Practice locations
Addresses where Marc A. Singer is enrolled with Medicare (CMS data updated 2026-10-02).
- 2160 S 1st AveMaywood, IL 60153 (708) 216‑9000
- 425 Sand Creek Dr, Suite CChesterton, IN 46304
Group practices
Medicare enrollment lists Marc A. Singer as a member of these groups (CMS data updated 2026-10-02).
- Loyola University Medical Center953 clinicians in the group
- Chesterton Physical Therapy Inc186 clinicians in the group
Specialties
Find other Colorectal Surgery (Proctology) doctors in Illinois →
Other colorectal surgeons in Illinois
Clinicians with the same Medicare primary specialty in Illinois — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Medical school | University Of Illinois College Of Med (chi/peor/rock/chm-Urb) |
| Graduation year | 1997 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1194732909 |
| 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