Locations and Physicians

David T. Vonk, MD

Patient Portal


Radiation Oncology


Tucson - St. Mary’s Radiation Oncology
1620 W. St. Mary's Road
Tucson, AZ 85745
Phone: (520) 791-7996
Fax: (520) 791-3329

Tucson - Orange Grove Radiation Oncology
1845 W. Orange Grove, Bldg. 1
Tucson, AZ 85704
Phone: (520) 544-2919
Fax: (520) 544-2943

David T. Vonk, MD


Arizona State University

Medical School

University of Wisconsin School of Medicine and Public Health


Gundersen Lutheran Hospital


University of Arizona

Board Certification

Radiation Oncology


After completing his undergraduate studies in Physics at Arizona State University, Dr. Vonk graduated with honors, with a focus in Medical Physics. He earned his medical degree from the University of Wisconsin School of Medicine and Public Health in Madison. Following graduation from medical school, Dr. Vonk completed a Transitional internship at Gundersen Lutheran Hospital in La Crosse, Wisconsin. He completed residency in Radiation Oncology at the University of Arizona where he served as chief resident.

Dr. Vonk's primary focus is to compassionately deliver evidence based care that is patient centered. He has a particular interest in the implementation of advancing radiation technologies including intensity modulation, stereotactic ablative therapy, and functional imaging for target delineation.

When outside of the clinic, Dr. Vonk spends his time hiking and camping in the beautiful desert and mountains of Tucson with his wife and three young boys.