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

Michael Edward Grzelak, MD

Individual provider Internal Medicine Physician · NPI 1386808913

Michael Edward Grzelak, MD is a Hospitalist in Winfield, Illinois. Qualified in 2007, 19 years ago. Practices with Central Dupage Physician Group, a 1,094-clinician group and accepts Medicare assignment. Licensed in Illinois.

Years since qualifying
19
Licensed in
IL
In the registry since
2008
Specialties on file
2
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

25 N Winfield Rd
Winfield, IL 60190-1295
Phone: (630) 933-4700
Fax: (630) 933-4427
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hospitalist Physician (primary) Taxonomy 208M00000X · Licence 036124898 (IL)
Internal Medicine Physician Taxonomy 207R00000X · Licence 036124898 (IL)

Record details

NPI number1386808913
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 14, 2008
Last updated in NPPESJanuary 18, 2018

Medicare enrollment

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

Medicare specialtyHOSPITALIST
Medical schoolOTHER
Graduated 2007 (19 years in practice)
Group practice Central Dupage Physician Group — 1094 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount

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