Dennis is an Associate Professor in the Centre for Health Economics, Monash Business School.

He was previously a senior research fellow at the University of Melbourne and a Lecturer in Health Economics at the University of Dundee, UK.

Dennis 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 led a large number of economic evaluations of healthcare interventions including alongside RCTs.

He has consistently published in the top health economics journals. He specialises in analysing large and complex data sets to improve health policy decisions.