Dennis is an Associate Professor in the Centre for Health Economics, Monash University. He was previously a senior research fellow at the University of Melbourne and a Lecturer in Health Economics at the University of Dundee, UK. He has published extensively on the economics of illicit drugs and alcohol, economics of disability, economics of cancer, the longitudinal measurement and evaluation of health inequalities and has lead a large number of economic evaluations of healthcare interventions including alongside RCTs. He has consistently published in the top health economics journals, with multiple papers in the Journal of Health Economics (3), Health Economics (5) and Social Science & Medicine (5) and also high impact medical journals including BMJ, PLOS Medicine, Addiction (2), Diabetologia, Diabetes Care (2) and Epidemiology (2). He specialises in analysing large and complex data sets to improve health policy decisions.