Steven O’Day

Steven J. O’Day, M.D. is the Executive Director of John Wayne Cancer Institute and Cancer Clinic at Providence Saint John’s Health Center, Director of Providence Los Angeles Regional Research, and a Professor of Medical Oncology. A board-certified medical oncologist, he is recognized as one of the world’s preeminent melanoma specialists and a leader of immune-based therapies across many cancer types.

Dr. O’Day has been at the forefront of new drug development and immunotherapies for cancers over the last two decades and has been a principal investigator for more than 100 clinical trials. He played a leadership role in the development of the breakthrough immune checkpoint inhibitor ipilimumab as well as the anti- PD1 antibodies pembrolizumab and nivolumab.

Dr. O’Day completed his medical training was at Johns Hopkins in Baltimore and the Dana Farber Cancer Institute in Boston.