William K. Oh, MD

William K. Oh, MD, is a genitourinary oncologist with decades of experience specializing in prostate cancer. He integrates molecular and genetic testing into routine cancer care, ensuring that patients receive the most personalized treatment plans possible. Throughout his career he has focused on decreasing barriers to the delivery of care for prostate cancer nationally.

Dr. Oh is the director of precision medicine at Yale Cancer Center and Smilow Cancer Hospital, where he leads efforts to develop cohesive programs that combine basic and translational science with clinical trials. He also oversees the Precision Medicine Tumor Board, which is pivotal in guiding treatment decisions based on genetic and molecular data. Additionally, he serves as the service line medical director of Smilow Cancer Hospital at Greenwich Hospital, where he continues to develop integrated oncology care teams and expand the impact of multidisciplinary cancer care for patients in the region.

Dr. Oh completed his undergraduate degree at Yale University, received his medical degree from New York University School of Medicine, and did his internship and residency at Brigham and Women’s Hospital before his clinical fellowship in medical oncology at Dana-Farber Cancer Institute.

Dr. Oh currently serves as chair of the American Cancer Society's National Prostate Cancer Roundtable, whose mission is to improve prostate cancer outcomes and survivorship through increasing awareness and equitable access to prevention, screening, and treatment. Also, he is the chair of the Medical Advisory Council for the Chemotherapy Foundation, which is committed to discovering novel therapies for cancer.

“I love taking care of patients because it brings me tremendous personal satisfaction to both help them and learn from them,” Dr. Oh says. “I also love the precision medicine part of my job, but in the end, my patient care responsibilities always bring me back to what it’s all about and why we’re all here and I enjoy getting to know my patients and their generosity of spirit and courage. I take a lot of lessons from that.”