URMC / Pathology & Laboratory Medicine / Education / Fellowships / Gastrointestinal Pathology Fellowship / Faculty Faculty Aaron Huber, D.O., Gastrointestinal and Hepatobiliary Pathologist; Director, Surgical Pathology Roula Katerji, M.D., Assistant Professor; Gastrointestinal and Hepatobiliary Pathologist, Program Director GI Fellowship Christa Whitney-Miller, M.D., Professor; Gastrointestinal and Hepatobiliary Pathologist; Department Chair Diana Agostini-Vulaj, D.O., Associate Professor; Gastrointestinal and Hepatobiliary Pathologist Mark Ettel, M.D., Assistant Professor; Gastrointestinal and Hepatobiliary Pathologist; Director Gastrointestinal and Hepatobiliary Pathology Jennifer Findeis-Hosey, M.D., Associate Professor; Gastrointestinal and Hepatobiliary Pathologist; Vice Chair Educational Programs Yansheng Hao, M.D., Ph.D., Assistant Professor; Gastrointestinal and Hepatobiliary Pathologist Xiaoyan Liao, B.Med., Ph.D., Associate Professor; Gastrointestinal and Hepatobiliary Pathologist Numbereye Numbere, M.D., Assistant Professor; Gastrointestinal and Hepatobiliary Pathologist Charlotte Ryan, M.D., Professor Emeritus; Gastrointestinal and Hepatobiliary Pathologist Sarah Findeis, M.D. Assistant Professor; Gastrointestinal and Hepatobiliary Pathologist