Quick answers
- Which hospitals does Michael C. Kowalczyk work at?
- Medicare's official clinician data lists Michael C. Kowalczyk at 4 hospitals: Eaton Rapids Medical Center, Edward W Sparrow Hospital, McLaren Greater Lansing and University of Michigan Health - Sparrow Eaton. This is where the clinician works or has privileges; call the hospital to confirm.
- Where does Michael C. Kowalczyk see patients?
- Medicare's clinician data lists 2 practice locations, including Eaton Rapids, MI and Lansing, MI. Call before your visit to confirm the address.
- What is Michael C. Kowalczyk's specialty?
- Medicare lists Internal Medicine as the primary specialty.
- Does Michael C. Kowalczyk accept Medicare assignment?
- Yes. Medicare's clinician data says Michael C. Kowalczyk 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 Michael C. Kowalczyk?
- (517) 999-4500, as listed in official Medicare / NPI Registry data.
- What is Michael C. Kowalczyk's NPI number?
- 1649277211. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.
Hospitals where Michael C. Kowalczyk works
Medicare's Facility Affiliation Data lists Michael C. Kowalczyk at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.
- Eaton Rapids Medical CenterEaton Rapids, MI · Critical Access Hospital · CCN 231324
- Edward W Sparrow HospitalLansing, MI · Acute Care Hospital · CCN 230230
- McLaren Greater LansingLansing, MI · Acute Care Hospital · CCN 230167
- University of Michigan Health - Sparrow EatonCharlotte, MI · Critical Access Hospital · CCN 231327
Practice locations
Addresses where Michael C. Kowalczyk is enrolled with Medicare (CMS data updated 2026-10-02).
- 1500 S Main St, Ermc Family Practice and RedicareEaton Rapids, MI 48827 (517) 999‑4500
- 3955 Patient Care DrLansing, MI 48911 (517) 374‑7600
Group practices
Medicare enrollment lists Michael C. Kowalczyk as a member of these groups (CMS data updated 2026-10-02).
- Capital Internal Medicine Associates P.C.65 clinicians in the group
- Eaton Rapids Medical Center32 clinicians in the group
Specialties
- Internal Medicineprimary
Other internal medicine doctors in Eaton Rapids
Clinicians with the same Medicare primary specialty in Eaton Rapids, MI — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Michigan State University College Of Osteopathic Medicine |
| Graduation year | 1988 |
| Gender (as listed) | Male |
| Medicare assignment | Accepts (Medicare-approved amount as full payment) |
| NPI (National Provider Identifier) | 1649277211 |
| 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