Dr. Gregory A. Masters

Dr. Gregory A. Masters, MD, is a board-certified medical oncologist specializing in thoracic oncology, gastrointestinal cancers, and clinical trial design. He is a Professor of Medicine at Thomas Jefferson University and practices at the Helen F. Graham Cancer Center & Research Institute at ChristianaCare in Delaware. Dr. Masters earned his medical degree from Indiana University School of Medicine, completed his internal medicine residency at the University of Michigan, and his fellowship in hematology/oncology at the University of Pennsylvania.

Dr. Masters’s research interests include optimizing treatment strategies for lung and colorectal cancers, as well as improving cancer care delivery in community settings. He has served as principal investigator for multiple cooperative group trials, with a focus on translating advances from academic research into broader clinical practice. His work emphasizes multidisciplinary care, integrating medical oncology with surgery, radiation, and supportive services to enhance patient outcomes.

In addition to his research contributions, Dr. Masters is an active educator and leader in oncology training. He has been involved in curriculum development for oncology fellowship programs and has served in leadership roles within the American Society of Clinical Oncology (ASCO), including on guideline panels. Through his commitment to advancing cancer research, clinical excellence, and education, Dr. Gregory A. Masters continues to make a significant impact on oncology practice.