Professor Neville Calleja qualified as a medical doctor in 1999 and proceeded to study Medical Statistics and Public Health after his medical training. He qualified as a specialist in public health medicine in 2006 and was awarded Membership of the Faculty of Public Health in the UK in 2011. In 2013, Neville completed his PhD studies on health survey methodology. He has been employed at the Directorate for Health Information and Research within the Ministry responsible for Health since 2001, taking on its helm in 2007, and also served as Acting Chief Medical Officer for a period of one year during 2014/5.