Katherine Exten, MD

Oncology and Hematology
Katherine Exten, MD

Dr. Exten graduated summa cum laude from Ohio State University with bachelor’s degrees in chemistry and molecular genetics. She received her medical degree from the Ohio State University College of Medicine and completed her internship and residency in internal medicine at the Ohio State University Wexner Medical Center. Dr. Exten then completed a fellowship in hematology and oncology at the University of Illinois at Chicago.

Prior to joining the Zangmeister Cancer Center, she worked as a medical oncologist and hematologist at OhioHealth Physician Group in Mansfield, OH treating all types of cancer and benign hematologic conditions. At this practice, she was able to have the experience of working alongside her father, an oncologist with over 40 years of practice, which proved to be an invaluable experience as she embarked on her own career.

Board-certified in hematology, medical oncology, and internal medicine by the American Board of Internal Medicine, Dr. Exten treats all types of cancer and blood disorders, with a specific interest in cardio-oncology. She is active in research and has contributed to peer-reviewed publications.

Mar 20th, 2025
★★★★★
Dr. Exten is a knowledgeable and good at handling cancer questions from patients and family. I have found all doctors need to take more of an inquisitive role as to what their patients do for a living, before they blanket-statements about returning to work full-time full-time. Some folks have more physically stenuous positions and will not be able to return to the same position ever or without some accommodations.
Mar 13th, 2025
★★★★★
First visit. Staff are friendly and helpful. Doctor had answers to my questions. She was straightforward with information.
Feb 4th, 2025
★★★★
Nice meeting Dr Exten. I was a little taken back because wasn't aware of what the low white count would be related too. Especially cancer related issues. Waiting to hear what Dr Exten sees in my lab results.