Harry graduated in 1973 from Monash University with a Bachelor of Medicine and Bachelor of Surgery. In 1980 he was admitted as a Fellow of the College of General Practitioners. Since 1981 he has been an examiner for the Victorian Panel of the Royal Australian College of General Practitioners.

In 1983 he completed the Sports Medicine training program with the Australian Sports Medicine Federation. He was the Medical Officer for the Kangaroos Football Club from 1983 to 2001 and this has enabled him to practise sports medicine with elite sportsmen at the highest level. In 1996 Harry was admitted as a fellow of the Australian Sports Medicine Federation.

Harry was selected as an Olympic doctor for the Sydney Olympics and the doctor for the All-Australian A.F.L. team touring Ireland in 2000 and 2001. He was recently awarded a fellowship to Sports Doctors Australia and is currently the Chief Medical Advisor to the AFL.