Worta J. McCaskill-Stevens was an American medical oncologist and a senior investigator at the National Cancer Institute (NCI). She was a leading authority on cancer prevention, clinical trials, and health equity. McCaskill-Stevens is best known for her leadership of the **NCI Community Oncology Research Program (NCORP)**, where, as Chief of the Community Oncology and Prevention Trials Research Group, she oversaw clinical cancer research in community settings across the United States and Internationally.