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Steven J. O’Day, M.D., is professor of Medical Oncology and director of Immuno-Oncology and Clinical Research at the John Wayne Cancer Institute at Providence Saint John’s Health Center. A board-certified medical oncologist, Dr. O’Day is recognized as one of the world’s preeminent melanoma specialists. He is also a leader of immune-based therapies across many cancer types.
In 1994, Dr. O’Day founded the Medical Oncology Division of The John Wayne Cancer Institute in partnership with the world-class surgical oncology faculty. In addition, he was a founding member of The Angeles Clinic and Research Institute, where he was chief of research and director of the melanoma program.
Dr. O’Day has been at the forefront of new drug development and immunotherapies for melanoma and other cancers for the last two decades. He has been a principal investigator for more than 100 clinical trials, including several large, international phase 3 studies. He lectures extensively, both nationally and internationally, and has published more than 200 scientific articles, abstracts and reviews in prestigious peer-reviewed journals.