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

John George Sanidas, MD

Individual provider Internal Medicine Physician · NPI 1356388359

John George Sanidas, MD is an Internal Medicine in Mequon, Wisconsin. Graduated from Medical College of Wisconsin in 1995, 31 years ago. Practices with Madison Medical Affiliates Inc, a 86-clinician group and accepts Medicare assignment. Licensed in Wisconsin.

Years since qualifying
31
Trained at
Medical College of Wisconsin
Licensed in
WI
In the registry since
2006
What do these letters mean?
MD — Doctor of Medicine
A physician who completed allopathic medical school.

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Practice location Address checks out

13133 N Port Washington Rd Ste G-18
Mequon, WI 53097-2419
Phone: (262) 243-5000
Fax: (262) 243-2527
Show map & directions

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

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 38112 (WI)

Record details

NPI number1356388359
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 31, 2006
Last updated in NPPESNovember 9, 2016

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolMEDICAL COLLEGE OF WISCONSIN
Graduated 1995 (31 years in practice)
Group practice Madison Medical Affiliates Inc — 86 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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