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Thomas Hanzlik, MD

Hematology, Oncology, Internal Medicine

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1211 Fish Hatchery Rd.

Madison, WI 53715

1513 Park Ave, 2nd Floor

Columbus, WI 53925

3200 E Racine St

Janesville, WI 53546


Thomas Hanzlik is board certified by the American Board of Internal Medicine. He obtained his undergraduate degree from the University of Wisconsin in Madison, WI and earned his medical degree from the University of Wisconsin School of Medicine and Public Heath in Madison. Dr. Hanzlik completed his residency in internal medicine and his fellowship in hematology and oncology at the University of Arizona in Tucson, AZ.

Dr. Hanzlik’s practice is focused on gastrointestinal, genitourinary and brain tumors. He also treats patients with melanoma.

Dr. Hanzlik is a member of the American Society of Clinical Oncology and the American Society of Hematology.

While he is not working, Dr. Hanzlik enjoys spending with his wife and three children.

“I strive to understand each patient’s unique perspectives, preferences, and wishes. Coupling that with the latest evidence based medical care, I tailor my recommendations accordingly. I then continue to check in with my patients frequently to make sure that we remain on the path that is right and compassionate for that individual.” - Thomas Hanzlik, MD

Medical School:

University of Wisconsin - Madison


University of Arizona Health Sciences Center


University of Arizona Health Sciences Center

Certified By:


American Board of Internal Medicine

Arizona Board of Medical Examiners

Drug Enforcement Administration

Wisconsin Medical Examining Board

Hospital Affiliations:

St. Mary's Hospital - Madison St. Clare Hospital - Baraboo St. Mary's Hospital - Janesville
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