Medical emergency?Emergency? Call 911. Nearest emergency roomsNearest ERs

Thoracic Surgery

Kenneth M. Wolnak, DO

Works at hospitals in Rockford, IL · Janesville, WI · Illinois, Wisconsin

Summary

Kenneth M. Wolnak, DO (Thoracic Surgery) is listed by Medicare at 2 hospitals in Rockford, IL and Janesville, WI. NPI 1982744678. Medicare data says the clinician accepts Medicare assignment. Source: CMS Facility Affiliation Data, updated 2026-10-02.

From official Medicare data

This page shows what Medicare's official clinician data says about Kenneth M. Wolnak, joined by NPI number (data updated 2026-10-02). It is not a recommendation or a rating. Call the office or hospital to confirm before you go.

In a medical emergency, call 911.

At a glance

Thoracic SurgeryPrimary specialty
YesAccepts Medicare assignment
46Years since medical school (graduated 1980)
Midwestern University, Chicago College Of Osteopathic MedMedical school
MaleGender (as listed)
Mercy Health System CorporationGroup practice (+1 more)

Quick answers

Which hospitals does Kenneth M. Wolnak work at?
Medicare's official clinician data lists Kenneth M. Wolnak at 2 hospitals: Javon Bea Hospital and Mercy Health System Corp. This is where the clinician works or has privileges; call the hospital to confirm.
Where does Kenneth M. Wolnak see patients?
Medicare's clinician data lists 2 practice locations, including Janesville, WI and Rockford, IL. Call before your visit to confirm the address.
What is Kenneth M. Wolnak's specialty?
Medicare lists Thoracic Surgery as the primary specialty, and also Cardiac Surgery.
Does Kenneth M. Wolnak accept Medicare assignment?
Yes. Medicare's clinician data says Kenneth M. Wolnak 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 Kenneth M. Wolnak?
(608) 756-6000, as listed in official Medicare / NPI Registry data.
What is Kenneth M. Wolnak's NPI number?
1982744678. The NPI (National Provider Identifier) is the clinician's permanent federal ID; you can look it up in the official NPI Registry.

Hospitals where Kenneth M. Wolnak works

Medicare's Facility Affiliation Data lists Kenneth M. Wolnak at these hospitals (updated 2026-10-02). Each hospital page shows its address, phone, emergency services, Medicare rating and all its clinicians.

Practice locations

Addresses where Kenneth M. Wolnak is enrolled with Medicare (CMS data updated 2026-10-02).

Group practices

Medicare enrollment lists Kenneth M. Wolnak as a member of these groups (CMS data updated 2026-10-02).

  • Mercy Health System Corporation753 clinicians in the group
  • Rockford Health Physicians521 clinicians in the group

Specialties

Find other Thoracic Surgery doctors in Wisconsin →

Other thoracic surgeons in Wisconsin

Clinicians with the same Medicare primary specialty in Wisconsin — not a recommendation.

All thoracic surgeons in Wisconsin →

Clinician information

CredentialDO
Medical schoolMidwestern University, Chicago College Of Osteopathic Med
Graduation year1980
Gender (as listed)Male
Medicare assignmentAccepts (Medicare-approved amount as full payment)
NPI (National Provider Identifier)1982744678
CorrectionsReport 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

  1. Facility Affiliation Data — Centers for Medicare & Medicaid Services (CMS), data updated 2026-10-02, retrieved 2026-10-29
  2. National Downloadable File (Doctors and Clinicians) — CMS, data updated 2026-10-02, retrieved 2026-10-29
  3. NPI Registry — U.S. Department of Health and Human Services (NPPES), the clinician’s official record
  4. Medicare Care Compare — official Medicare tool to look up clinicians