Dr. David Zhen is an Associate Professor of Medicine at the Fred Hutchinson Cancer Research Center and University of Washington. He is a gastrointestinal medical oncologist and cares for patients with all gastrointestinal malignancies but has a specific clinical and research focus in neuroendocrine tumors and gastroesophageal cancers.  He is the Co-Director of the Neuroendocrine Tumor Program and also oversees the research program for gastroesophageal cancers at his institution. His research is focused on identifying new therapies through clinical trials incorporating translational research with the goal of identifying biomarkers that better predict response and resistance to therapy, particularly related to immunotherapy. He is the national and local PI for investigator-initiated and industry-sponsored clinical trials in neuroendocrine and gastroesophageal cancers and serves on several national committees including being a panel member of the NCCN Neuroendocrine and Adrenal Guidelines, Early Career Member of the NCI Neuroendocrine Task Force, and serves other roles within SWOG and the NCI cooperative group system.