Provider records sourced from NPPES (CMS National Plan & Provider Enumeration System). Data current as of August 10, 2026.

John A Johnkoski

Individual provider Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician · NPI 1992737035

John A Johnkoski is a Thoracic Surgery in Wausau, Wisconsin. Graduated from University of Michigan Medical School in 1988, 38 years ago. Practices with Aspirus Medical Group, Inc, a 274-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
38
Trained at
University of Michigan Medical School
Licensed in
WI
In the registry since
2006

Practice location Address checks out

425 Pine Ridge Blvd Ste 209
Wausau, WI 54401-4123
Phone: (715) 847-0400
Fax: (715) 847-0401
Show map & directions

Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Thoracic Surgery (Cardiothoracic Vascular Surgery) Physician (primary) Taxonomy 208G00000X · Licence 39318 (WI)

Record details

NPI number1992737035
Entity typeIndividual (Type 1)
GenderMale
Sole proprietorNo
NPI enumeratedJuly 7, 2006
Last updated in NPPESJuly 8, 2007
Mailing address425 Pine Ridge Blvd, Suite 209, Wausau, WI 54401-4123

Medicare enrollment

From the CMS Doctors & Clinicians file — this clinician is enrolled in Medicare.

Medicare specialtyTHORACIC SURGERY
Medical schoolUNIVERSITY OF MICHIGAN MEDICAL SCHOOL
Graduated 1988 (38 years in practice)
Group practice Aspirus Medical Group, Inc. — 274 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations2 on file with Medicare

Other providers in Wausau