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
Mailing address25 N Winfield Rd, Winfield, IL 60190-1295

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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