John is an active researcher whose interests include clinical outcomes in kidney transplantation, access to care, clinical trials and health services research. He has served as the supervisor for Masters and PhD candidates at the UBC School of Population and Public Health. He holds a Canadian Institutes of Health Research Foundation Grant and received the Established Clinical Investigator Award from the American Society of Transplantation in 2017. He is a Past President of the Canadian Society of Nephrology and the Canadian Organ Replacement Register Board of Directors. He previously served as a co-chair of the White House Research and Innovation in Transplantation Working Group under President Obama.