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

Joseph A Kowalczyk, MD

Individual provider Internal Medicine Physician · NPI 1831166255

Joseph A Kowalczyk, MD is an Internal Medicine in Oak Lawn, Illinois. Graduated from Rush Medical College of Rush University in 1990, 36 years ago. Practices with Adult Primary Care Center Ltd, a 5-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
36
Trained at
Rush Medical College of Rush University
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

4340 W 95th St
Oak Lawn, IL 60453
Phone: (708) 636-1601
Fax: (708) 636-1825
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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 (IL)

Record details

NPI number1831166255
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMarch 3, 2006
Last updated in NPPESJuly 13, 2026
Mailing address4340 W 95th St, Oak Lawn, IL 60453

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolRUSH MEDICAL COLLEGE OF RUSH UNIVERSITY
Graduated 1990 (36 years in practice)
Group practice Adult Primary Care Center Ltd — 5 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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