Professor Jennings is president of the Association of Australian Medical Research Institutes; Cardiovascular and Respiratory Co-Director for Bayside Health, which includes The Alfred Hospital; and is a professor of medicine at Monash University. He was a principal investigator of the Second Australian National Blood Pressure Study (ANBP2) and chaired the Left Ventricular Hypertrophy (LVH) sub studies for both ANBP2 and for the ONTARGET/TRANSCEND clinical trial programs.
Professor Jennings is a board member of Research Australia, the National Heart Foundation and chair of the peak committee overseeing research and cardiovascular health programs. He is chair of Nucleus Network, a comprehensive clinical trials facility and is a former president of the High Blood Pressure Research Council of Australia.