Mark J. Amsbaugh, MD, is a board-certified and fellowship-trained radiation oncologist specializing in tumors of the central nervous system, lung, head and neck, prostate, and breast. He has experience in multiple radiotherapy delivery techniques, including radiosurgery using the Leksell Gamma Knife, stereotactic ablative body radiotherapy, image-guided and intensity-modulated radiotherapy, and high dose-rate brachytherapy. Amsbaugh earned his medical degree at The University of Texas Medical School at Houston and completed residency training in radiation oncology at the James Graham Brown Cancer Center at the University of Louisville, Kentucky, where he served as chief resident and president of the University of Louisville House Staff. He completed a clinical fellowship in radiation oncology at The University of Texas MD Anderson Cancer Center in Houston. He has authored numerous articles and published in peer-reviewed journals, including Head and Neck, the Journal of Neuro-Oncology, and Cancer. He is the author of several book chapters focused on brain tumor treatments and radiosurgery and has given national and international presentations on a variety of topics. In addition to numerous research awards, Amsbaugh has received multiple honors, including the Emmet J. Conrad Award, the RSNA Roentgen Award, and the University of Louisville House Staff of the Year Award.