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

Individual provider Internal Medicine Physician · NPI 1588606222

Jaroslaw Ryszard Leszczak, MD is an Internal Medicine in Park Ridge, Illinois. Qualified in 1990, 36 years ago. Accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
36
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

1550 N Northwest Hwy Ste 209
Park Ridge, IL 60068-1411
Phone: (847) 653-8413
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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 36-096239 (IL)

Record details

NPI number1588606222
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJune 10, 2006
Last updated in NPPESSeptember 1, 2015

Medicare enrollment

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

Medicare specialtyINTERNAL MEDICINE
Medical schoolOTHER
Graduated 1990 (36 years in practice)
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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