Quick answers
- Which hospitals does John A. Hart work at?
- Medicare's official clinician data lists John A. Hart at 4 hospitals: Franciscan Health Dyer, Franciscan Health Michigan City, Rush University Medical Center and The University of Chicago Medical Center. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does John A. Hart see patients?
- Medicare's clinician data lists 1 practice location in Chicago, IL. Call before your visit to confirm the address.
- What is John A. Hart's specialty?
- Medicare lists Pathology as the primary specialty.
- Does John A. Hart accept Medicare assignment?
- Yes. Medicare's clinician data says John A. Hart 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 John A. Hart?
- (888) 824-0200, as listed in official Medicare / NPI Registry data.
- What is John A. Hart's NPI number?
- 1750433439. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where John A. Hart works
Medicare's Facility Affiliation Data lists John A. Hart at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Franciscan Health DyerDyer, IN · Acute Care Hospital · CCN 150090
- Franciscan Health Michigan CityMichigan City, IN · Acute Care Hospital · CCN 150015
- Rush University Medical CenterChicago, IL · Acute Care Hospital · CCN 140119
- The University of Chicago Medical CenterChicago, IL · Acute Care Hospital · CCN 140088
Practice locations
Addresses where John A. Hart is enrolled with Medicare (CMS data updated 2026-10-02).
- 5841 S Maryland AveChicago, IL 60637 (888) 824‑0200
Group practices
Medicare enrollment lists John A. Hart as a member of this group (CMS data updated 2026-10-02).
- University of Chicago1,712 clinicians in the group
Specialties
- Pathologyprimary
Other pathologists in Chicago
Clinicians with the same Medicare primary specialty in Chicago, IL — not a recommendation.
Clinician information
| Credential | MD |
|---|---|
| Graduation year | 1986 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1750433439 |
| 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