Quick answers
- Where does Marcus A. Larrieu see patients?
- Medicare's clinician data lists 3 practice locations, including Calumet City, IL, Flossmoor, IL and Bradley, IL. Call before your visit to confirm the address.
- What is Marcus A. Larrieu's specialty?
- Medicare lists Nurse Practitioner as the primary specialty.
- Does Marcus A. Larrieu accept Medicare assignment?
- Yes. Medicare's clinician data says Marcus A. Larrieu 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 Marcus A. Larrieu?
- (954) 939-5000, as listed in official Medicare / NPI Registry data.
- What is Marcus A. Larrieu's NPI number?
- 1497314397. 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 Marcus A. Larrieu is enrolled with Medicare (CMS data updated 2026-10-02).
- 1600 Torrence AveCalumet City, IL 60409 (954) 939‑5000
- 19550 Governors HwyFlossmoor, IL 60422 (954) 939‑5000
- 350 N Bradley BlvdBradley, IL 60915 (815) 348‑9320
Group practices
Medicare enrollment lists Marcus A. Larrieu as a member of these groups (CMS data updated 2026-10-02).
- Physicians Immediate Care North Chicago LLC257 clinicians in the group
- Harvey Emergency Physicians PLLC49 clinicians in the group
Specialties
- Nurse Practitionerprimary
Other nurse practitioners in Calumet City
Clinicians with the same Medicare primary specialty in Calumet City, IL — not a recommendation.
Clinician information
| Credential | NP |
|---|---|
| Graduation year | 2018 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1497314397 |
| 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