He is a staff specialist in the Department of Renal Medicine at Westmead Hospital Sydney, covering both Westmead and Auburn Hospital renal services. He is a clinical associate professor at University of Sydney and University of Notre Dame and works in both the Bone and Calcium Clinic at St Vincent’s Hospital Sydney and the Osteoporosis and Bone Biology Programme at the Garvan Institute for Medical Research. He has been a work group member for national (CARI) and international (KDIGO) guidelines on mineral and bone disorders associated with kidney disease and transplantation and is a contributor to Cochrane reviews and research studies in that area.