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

John M Tomkowiak, MD

Individual provider Psychiatry Physician · NPI 1649553751

John M Tomkowiak, MD is a Psychiatry in North Chicago, Illinois. Graduated from Southern Illinois University School of Medicine in 1992, 34 years ago. Practices with Department of Social Dept of Shs Div of Instns, a 24-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
34
Trained at
Southern Illinois University School of Medicine
Licensed in
IL
In the registry since
2011
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

3333 Green Bay Rd
North Chicago, IL 60064-3037
Phone: (847) 578-8381
Fax: (847) 578-8319
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Psychiatry Physician (primary) Taxonomy 2084P0800X · Licence 036.091148 (IL)

Record details

NPI number1649553751
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedSeptember 25, 2011
Last updated in NPPESOctober 15, 2011
Mailing address3333 Green Bay Rd, North Chicago, IL 60064-3037

Medicare enrollment

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

Medicare specialtyPSYCHIATRY
Medical schoolSOUTHERN ILLINOIS UNIVERSITY SCHOOL OF MEDICINE
Graduated 1992 (34 years in practice)
Group practice Department Of Social Dept Of Shs Div Of Instns — 24 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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