CEO/Managing Director at Pretium Pty Past: Head, Health Management Services at Quintiles Australia, Consultant, Global Health Systems... Joyce Lloyd is currently CEO/Managing Director of Pretium Pty Ltd, a health care firm based in Sydney specialising in health economics, clinical research and... Joyce Lloyd is currently CEO/Managing Director of Pretium Pty Ltd, a health care firm based in Sydney specialising in health economics, clinical research and disease management.