Dr. O’Neil is a clinician-scientist health services researcher. His primary research interest is in understanding and determining how to reduce the utilization of low-value cancer services. He is funded through the National Cancer Institute to investigate the role of payment model innovation in changing how providers use cancer services and whether payment reform results in unanticipated consequences for health care delivery. He also is a co-investigator for the CEASAR study, which is a prospective comparative effectiveness cohort, studying patient reported outcomes in prostate cancer treatment. He is a core faculty member of the Surgical Population Analysis and Research Core and is Director of the Urologic Oncology Research group in the Department of Surgery at the University of Utah.

His clinical practice at the Huntsman Cancer Institute focuses on the surgical treatment of genitourinary malignancies including prostate, bladder, kidney, and testicular cancers. He is an experienced robotic, laparoscopic, endoscopic, and open surgeon. Dr. O’Neil received his MD from the University of Rochester, completed his residency in urology at the University of Utah, and underwent fellowship training in health services research and urologic oncology at Vanderbilt University.