M.D.
Radiation Oncologist
Colton Ladbury, M.D., is a radiation oncologist at City of Hope® locations in Duarte and Orange County. He finds great meaning in offering patients personalized care using advanced techniques, including stereotactic radiosurgery, stereotactic body radiation therapy, total body irradiation, total marrow and lymphoid irradiation and both intracavitary and interstitial brachytherapy.
Dr. Ladbury earned his medical degree from the University of Colorado in Aurora, followed by an internship at HealthONE Sky Ridge Medical Center in Lone Tree, Colorado. He then completed a four-year residency in radiation oncology at City of Hope Duarte, where he served as chief resident. During that time, he was honored as Graduate Medical Education Trainee of the Year and ARRO Resident Educator of the Year. His training also included treating patients with blood, gynecologic and genitourinary cancers.
As a dedicated researcher, Dr. Ladbury co-authored 49 scientific publications — including 32 as lead author — upon joining City of Hope. His studies explore ways to improve cancer care through image-guided and biologically guided radiation, artificial intelligence and combining radiation with other treatments like stem cell transplants, chemotherapy and immunotherapy. His recent work on using radiation before CAR T cell therapy for large B cell lymphoma garnered a research grant from City of Hope.