Nicolas Demartines obtained his MD degree at the University of Geneva in 1985, and achieved his board of Surgery in 1990 at the University of Basel Medical School, Switzerland.

He has been Professor of Surgery, and Chairman of the Department for Visceral Surgery at the University Hospital CHUV in Lausanne, Switzerland, since 2006. His clinical and surgical activities are focused on oncologic surgery, mainly hepato-pancreatico-biliary and colorectal surgery and Upper GI. He is a former Treasurer to the ERAS® Society and Chairman of the ERAS Implementation Program.