Northwestern Medicine
Thomas B. Nealis, MD

Thomas B. Nealis, MD


Practice Focus Areas:
Anemia, Colon Polyp, Colon/Rectal Cancer, Endoscopy, General Gastroenterology, GI Bleeding, Heartburn
On Medical Staff At:
Central DuPage Hospital, Delnor Hospital, Northwestern Memorial Hospital
In Practice:
13 Years

*In the spirit of keeping you well-informed, the individuals identified are neither agents nor employees of Northwestern Medicine or any of its affiliate organizations. These physicians have selected our facilities as the place where they want to treat and care for their private patients.


    302 Randall Rd Ste 105
    Geneva, IL 60134-4220
    Phone: (630) 262-7400
    Fax: (630) 262-3760
    25 N Winfield Rd Ste 420
    Winfield, IL 60190-1295
    Phone: (630) 682-8700
    Fax: (630) 262-3760
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Insurance Accepted

    *Insurance plans are subject to change. Click here to view insurance plans accepted.

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    Education, Training & Fellowships

    Medical School:
    Georgetown University School of Medicine - 2006
    McGaw Medical Center of Northwestern University - 2012
    McGaw Medical Center of Northwestern University - 2009
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    • American Board of Internal Medicine - Gastroenterology
    • American Board of Internal Medicine - Internal Medicine