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

Individual provider General Practice Physician · NPI 1578857264

Mark Eugene Zajackowski, MD is a General Practice Physician in Chicago, Illinois. Practices as a sole proprietor. Licensed in Illinois.

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

5445 N Sheridan Rd #3102
Chicago, IL 60640-1957
Phone: (773) 271-0609
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

General Practice Physician (primary) Taxonomy 208D00000X · Licence 036-051907 (IL)

Record details

NPI number1578857264
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorYes
NPI enumeratedMay 31, 2011
Last updated in NPPESMay 31, 2011
Mailing address5445 N Sheridan Rd, 3102, Chicago, IL 60640-1957

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