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

Dr. Matthew Bernard Siegel, MD

Individual provider Internal Medicine Physician · NPI 1639333263

Dr. Matthew Bernard Siegel, MD is a Hematology/Oncology in Naperville, Illinois. Graduated from Loyola University of Chicago, Stritch School of Medicine in 2008, 18 years ago. Practices with Endeavor Health Medical Group, a 3,348-clinician group and accepts Medicare assignment. Licensed in Illinois and Oregon.

Years since qualifying
18
Trained at
Loyola University of Chicago, Stritch School of Medicine
Licensed in
IL, OR
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

120 Spalding Dr Ste 111
Naperville, IL 60540-6766
Phone: (630) 527-3788
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Pin is approximate — placed at the ZIP-code centre, not the exact door.

Specialties & licences

Hematology & Oncology Physician (primary) Taxonomy 207RH0003X · Licence PG158554 (OR)
Internal Medicine Physician Taxonomy 207R00000X · Licence 125054173 (IL)

Record details

NPI number1639333263
Entity typeIndividual (Type 1)
GenderMale
Credentials MD
Sole proprietorNo
NPI enumeratedJuly 14, 2008
Last updated in NPPESMarch 12, 2021
Certification dateMarch 12, 2021

Medicare enrollment

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

Medicare specialtyHEMATOLOGY/ONCOLOGY
Medical schoolLOYOLA UNIVERSITY OF CHICAGO, STRITCH SCHOOL OF MEDICINE
Graduated 2008 (18 years in practice)
Group practice Endeavor Health Medical Group — 3348 clinicians
Accepts Medicare assignment Yes — accepts the Medicare-approved amount
Practice locations5 on file with Medicare

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