John supports efforts to address health and broader societal challenges using the best-available research evidence and experiences and insights from citizens, professionals, organizational leaders, and government policymakers. He is an advisor to the Wellcome Trust on its Evidence Synthesis Infrastructure Collaborative. He is co-lead of and lead report writer for the Global Commission on Evidence to Address Societal Challenges, as well as co-lead of Rapid-Improvement Support and Exchange (RISE). He led the development of the ‘SHOW ME the evidence’ features of an approach to reliably deliver research evidence to those who need it. He was co-lead of the COVID-19 Evidence Network to support Decision-making (COVID-END). He is the Director of the McMaster Health Forum and Director of the WHO Collaborating Centre for Evidence-Informed Policy. He is a Professor in the Department of Health Evidence and Impact at McMaster University and the Tier 1 Canada Research Chair in Evidence-Support Systems. He holds an MD from Queen's University, an MSc from the London School of Economics, and a PhD (in Health Policy) from Harvard University.