He previously worked as an Epidemiologist and Medical Statistician at the Big Data Institute at the University of Oxford where he led more than 30 studies including large-scale international comparative analysis. He established an international consortium on Monitoring Mortality Inequality Consortium of which he is a Co-Director. Before joining Oxford, he was a quantitative research associate at the MRC Epidemiology Unit at the University of Cambridge, where his work involved research methodology and quantitative data analysis of randomised controlled trials and large observational databases.
Following his medical training (MBBS), he received his Masters and PhD in Epidemiology and Biostatistics at Harvard University and the University of British Columbia. He held several prestigious doctoral and postdoctoral fellowships from the Canadian Institutes of Health Research.