Quick answers
- Which hospitals does Peter A. Zack work at?
- Medicare's official clinician data lists Peter A. Zack at 1 hospital: Franciscan Health Michigan City. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Peter A. Zack see patients?
- Medicare's clinician data lists 2 practice locations, including Michigan City, IN and Chesterton, IN. Call before your visit to confirm the address.
- What is Peter A. Zack's specialty?
- Medicare lists Emergency Medicine as the primary specialty.
- Does Peter A. Zack accept Medicare assignment?
- Yes. Medicare's clinician data says Peter A. Zack 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 Peter A. Zack?
- (219) 879-8511, as listed in official Medicare / NPI Registry data.
- What is Peter A. Zack's NPI number?
- 1255781852. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Peter A. Zack works
Medicare's Facility Affiliation Data lists Peter A. Zack at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Franciscan Health Michigan CityMichigan City, IN · Acute Care Hospital · CCN 150015
Practice locations
Addresses where Peter A. Zack is enrolled with Medicare (CMS data updated 2026-10-02).
- 3500 Franciscan Way, Franciscan Health Michigan CityMichigan City, IN 46360 (219) 879‑8511
- 770 Indian Boundary RdChesterton, IN 46304 (219) 921‑2000
Group practices
Medicare enrollment lists Peter A. Zack as a member of this group (CMS data updated 2026-10-02).
- Clarksville Emergency Group PC148 clinicians in the group
Specialties
- Emergency Medicineprimary
Other emergency medicine doctors in Michigan City
Clinicians with the same Medicare primary specialty in Michigan City, IN — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | West Virginia School Of Osteopathic Medicine |
| Graduation year | 2016 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1255781852 |
| 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