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

Joseph Clarence Marek, MD

Individual provider Cardiovascular Disease Physician · NPI 1548216302

Joseph Clarence Marek, MD is a Cardiovascular Disease (Cardiology) in Downers Grove, Illinois. Graduated from Loyola University of Chicago, Stritch School of Medicine in 1975, 51 years ago. Practices with Advocate Health and Hospitals Corporation, a 3,079-clinician group, works from 3 locations and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
51
Trained at
Loyola University of Chicago, Stritch School of Medicine
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

3825 Highland Ave Tower 2 Ste 400
Downers Grove, IL 60515-1552
Phone: (630) 719-4799
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Additional practice locations (2)

  • 3743 Highland Ave Ste 1002, Downers Grove, IL 60515-1594 — (630) 719-4799
  • 1512 N Naper Blvd Ste 176, Naperville, IL 60563-9369 — (630) 527-2730

Specialties & licences

Cardiovascular Disease Physician (primary) Taxonomy 207RC0000X · Licence 036059600 (IL)

Record details

NPI number1548216302
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedMay 25, 2006
Last updated in NPPESApril 15, 2025
Certification dateApril 15, 2025
Mailing address29373 Network Pl, Chicago, IL 60673-1293

Medicare enrollment

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

Medicare specialtyCARDIOVASCULAR DISEASE (CARDIOLOGY)
Also practisesINTERNAL MEDICINE
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 1975 (51 years in practice)
Group practice Advocate Health And Hospitals Corporation — 3079 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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