Northwestern University Feinberg School of Medicine

Department of Surgery

(2017-2019) - MENTOR: Karl Bilimoria, MD

Dr. Ellis’ research centers on surgical quality improvement and outcomes research pertaining to complex surgical oncology under the guidance of his mentor, Dr. Karl Bilimoria. Specifically, he is focusing on hepatopancreaticobiliary (HPB) surgery and factors associated with adverse outcomes in this patient population. He will also be studying the effects of regionalization of complex surgical care, as well as developing national quality standards for management of patients before and after HPB surgery. In addition, he will be examining what factors drive patients to choose one hospital or surgeon over another prior to having surgery. Dr. Ellis is an American College of Surgeons Clinical Scholar as well as a T32 postdoctoral fellow at the Northwestern Center for Healthcare Studies. He is currently working on a master’s degree in Health Services and Outcomes Research at Northwestern University. 


Ellis RJ, Merkow RP. Exploring the Underlying Mechanisms of the Volume-Outcome Relationship in Complex Cancer Care. Annals of Surgical Oncology. 2017 Aug;24(8):2067-2068. doi: 10.1245/s10434-017-5874-7. Epub 2017 May 5.​