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

Individual provider Internal Medicine Physician · NPI 1871543694

Dr. Andrzej Jozef Gacek, MD is an Internal Medicine in Chicago, Illinois. Qualified in 1978, 48 years ago. Accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
48
Licensed in
IL
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

5901 N Milwaukee Ave Ste D
Chicago, IL 60646-5400
Phone: (773) 631-1300
Fax: (773) 631-3971
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Internal Medicine Physician (primary) Taxonomy 207R00000X · Licence 036.117533 (IL)

Record details

NPI number1871543694
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 11, 2006
Last updated in NPPESSeptember 30, 2009

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1978 (48 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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