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

Dr. Stan L Markus, MD

Individual provider Colon & Rectal Surgery Physician · NPI 1134103641

Dr. Stan L Markus, MD is a General Surgery in Oconomowoc, Wisconsin. Graduated from Wright State University Boonshoft School of Medicine in 1982, 44 years ago. Practices with Prohealth Medical Group Inc, a 472-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
44
Trained at
Wright State University Boonshoft School of Medicine
Licensed in
WI
In the registry since
2005
Specialties on file
2
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

888 Thackeray Trl Ste 103
Oconomowoc, WI 53066-4342
Phone: (262) 567-1499
Fax: (262) 567-4502
Show map & directions

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

Specialties & licences

Surgery Physician (primary) Taxonomy 208600000X · Licence 28258 (WI)
Colon & Rectal Surgery Physician Taxonomy 208C00000X · Licence 28258 (WI)

Record details

NPI number1134103641
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedNovember 30, 2005
Last updated in NPPESNovember 29, 2017
Mailing address888 Thackeray Trl Ste 103, Oconomowoc, WI 53066-4342

Medicare enrollment

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

Medicare specialtyGENERAL SURGERY
Medical schoolWRIGHT STATE UNIVERSITY BOONSHOFT SCHOOL OF MEDICINE
Graduated 1982 (44 years in practice)
Group practice Prohealth Medical Group Inc — 472 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations4 on file with Medicare