Dr. William K. Oh is Professor of Medicine in the Division of Medical Oncology and Director of Precision Medicine for Yale Cancer Center. He also serves as Medical Director of Smilow Cancer Hospital at Greenwich Hospital.
As Director of Precision Medicine for Yale Cancer Center and Smilow Cancer Hospital, he is focused on building a cohesive program in precision medicine, integrating basic and translational science, clinical trials, and Smilow Cancer Hospital’s Precision Medicine Tumor Board. He is committed to increasing the routine use of molecular and genetic testing for all patients with cancer, a goal he has been committed to throughout his career.
Dr. Oh is a genitourinary oncologist with decades of experience caring for patients with prostate cancer. Before his appointment at Yale, Dr. Oh served as the Chief Medical Officer and Executive Vice President of the Prostate Cancer Foundation, where he focused on barriers to the delivery of care for prostate cancer nationally. Dr. Oh led an expert panel that synthesized the evidence and published guidelines for prostate cancer screening for Black men in the US, which was published in 2024 in NEJM Evidence. He was also Chief Medical Officer of Sema4, a publicly-traded genomics and health intelligence company that developed AI tools to help doctors make better clinical decisions for patients.
From 2009-2020, Dr. Oh was System Chief of Hematology and Medical Oncology at Mount Sinai Health System as well as Deputy Director of the Tisch Cancer Institute from 2017-2020. Prior to joining Mount Sinai, Dr. Oh advanced from Instructor to Associate Professor of Medicine at Harvard Medical School and was Clinical Director of the Lank Center for Genitourinary Oncology at Dana-Farber Cancer Institute.
Dr. Oh also serves as Chair of the American Cancer Society’s National Prostate Cancer Roundtable, as a member of the Board of Trustees and Chair of the Medical Advisory Council for the Chemotherapy+ Foundation. He has participated on grant review committees for multiple National Institutes of Health, National Cancer Institute, and Foundation grants, and has served on guidelines panels for the American Urological Association and American Society of Clinical Oncology. He has participated on multiple journal editorial boards. Dr. Oh has published nearly 400 peer-reviewed publications and book chapters in genitourinary oncology and is a frequently invited lecturer at national and international meetings. He is an inductee of American Society for Clinical Investigation and has been continuously selected as a Top Doctor in New York Magazine, Castle Connolly, Best Doctors and Super Doctors from 2010 to 2024. He was recently honored as a Top AAPI Doctor in 2023 and 2024.
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.