Doctor profile · Federal record

Dr. Kenneth Wolnak, DO

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (CMS: Thoracic Surgery) · Janesville, WI

  • NPI 1982744678
  • Accepts Medicare
  • 46 yrs in practice
  • Male
  • Group practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
1000 Mineral Point Ave
Janesville, WI 535482940
(608) 756-6868

Credentials & registration

NPPES · NUCC
NPI registered
February 2007 — 19 yrs on file
Profile last updated
July 8, 2007
Year of graduation
1980 — 46 yrs since
Specialty taxonomy
208G00000X — NUCC code
State license (1)
Wisconsin #40664

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1982744678. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
24
Distinct HCPCS
2
Medicare allowed
$19,228
HCPCS Description Services Patients Avg allowed
33533 Coronary artery bypass using artery graft, 1 graft 13 13 $1,467
33508 Harvest of vein using an endoscope 11 11 $14

In context: peer comparison

Among 2 peers in Janesville Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician, average services per provider: 20. This provider delivers 1.2× the peer median.

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
28
Patients
25
Total drug cost
$33
Drug Type Claims Patients Total cost
Chlorhexidine Gluconate Generic 28 25 $33

Frequently asked questions

Auto-generated from federal data
What is Dr. Kenneth Wolnak's medical specialty?
Dr. Kenneth Wolnak practices Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician in Janesville, WI.
Where does Dr. Kenneth Wolnak practice?
Dr. Kenneth Wolnak practices at 1000 Mineral Point Ave, Janesville, WI 535482940. Office phone: 6087566868.
What is Dr. Kenneth Wolnak's NPI?
Dr. Kenneth Wolnak's National Provider Identifier (NPI) is 1982744678, issued by NPPES.
Does Dr. Kenneth Wolnak accept Medicare assignment?
Yes. Dr. Kenneth Wolnak accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Kenneth Wolnak commonly perform?
Top Medicare-reported procedures in 2023: Coronary artery bypass using artery graft, 1 graft (HCPCS 33533); Harvest of vein using an endoscope (HCPCS 33508). Source: CMS Medicare Physician & Other Practitioners file.