Quick answers
- 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 October 2, 2026. Ask the office to confirm before your visit.
- How many Medicare patients does Michael C. Kowalczyk see?
- In 2024, CMS data shows 551 Original Medicare patients and 1,798 services for Michael C. Kowalczyk. This counts Original Medicare only and measures volume, not quality.
- 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.
Medicare activity in 2024
Official CMS public-use data for Michael C. Kowalczyk, data year 2024 (released May 21, 2026). It covers Original Medicare (fee-for-service) patients only, not Medicare Advantage or other insurance. It shows volume, not quality or outcomes. CMS hides any count of 10 or fewer patients.
| Original Medicare patients | 551 |
|---|---|
| Services billed to Medicare | 1,798 |
| Different services or procedures | 49 |
| Participating Medicare provider | Yes |
| Average age of these patients | 74 |
Most frequent services
- Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes (99232)289 services
- Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more (99214)202 services
- Dxa bone density measurement of hip, pelvis, spine (77080)180 services
- Calculation of trabecular bone score (tbs) using imaging data with interpretation and report on fracture risk (77089)176 services
- Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more (99213)130 services
Chronic conditions among these patients
Share of this clinician’s Original Medicare patients with each condition, as published by CMS (it describes the patients, not the care given).
- High blood pressure75%
- High cholesterol72%
- Arthritis55%
- Diabetes37%
- Anxiety34%
- Ischemic heart disease30%
Hospitals where Michael C. Kowalczyk works
Medicare's Facility Affiliation Data lists Michael C. Kowalczyk at these hospitals (updated October 2, 2026). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians. Star rating and emergency services: Hospital General Information (CMS), data updated October 26, 2026.
- Eaton Rapids Medical CenterEaton Rapids, MI · Critical Access Hospital · Emergency services: listed by Medicare · CCN 231324
- Edward W Sparrow HospitalLansing, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230230
- McLaren Greater LansingLansing, MI · Acute Care Hospital · Medicare rating: 3 of 5 stars · Emergency services: listed by Medicare · CCN 230167
- University of Michigan Health - Sparrow EatonCharlotte, MI · Critical Access Hospital · Medicare rating: 1 of 5 stars · Emergency services: listed by Medicare · CCN 231327
Practice locations
Addresses where Michael C. Kowalczyk is enrolled with Medicare (CMS data updated October 2, 2026).
- 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 October 2, 2026).
- 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.
Other clinicians in Capital Internal Medicine Associates P.C.
Medicare enrollment lists these clinicians in the same group practice — not a recommendation.
Clinician information
| Credential | DO |
|---|---|
| Medical school | Michigan State University College Of Osteopathic Medicine |
| Graduation year | 1988 (38 years since medical school) |
| 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 October 2, 2026, retrieved October 29, 2026
- Hospital General Information — CMS, data updated October 26, 2026, retrieved November 13, 2026
- National Downloadable File (Doctors and Clinicians) — CMS, data updated October 2, 2026, retrieved October 29, 2026
- Medicare Physician & Other Practitioners - by Provider — CMS, data year 2024, released May 21, 2026; Medicare Physician & Other Practitioners - by Provider and Service
- 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