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

Dr. Steven Mather Kotsonis, MD

Individual provider General Practice Physician · NPI 1306017991

Dr. Steven Mather Kotsonis, MD is a General Practice Physician in Pewaukee, Wisconsin. Practices as a sole proprietor. Licensed in Wisconsin.

Licensed in
WI
In the registry since
2008
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

See every abbreviation used in this directory →

Practice location Address checks out

1109 Cecelia Dr
Pewaukee, WI 53072-2524
Phone: (262) 373-6733
Fax: (262) 373-6018
Show map & directions

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

Specialties & licences

General Practice Physician (primary) Taxonomy 208D00000X · Licence 53437-20 (WI)

Record details

NPI number1306017991
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMarch 21, 2008
Last updated in NPPESJune 27, 2018