Graduating with a Bachelor of Medicine, Bachelor of Surgery (MBBS) in 1988, Dr Madigan went on to complete specialist radiology training in Adelaide and was awarded a Fellowship of the Royal Australian and New Zealand College of Radiologists (FRANZCR) in 1994.

Dr Madigan worked as a Senior Registrar at Oxford Interventional Radiology in the United Kingdom before returning to Adelaide to complete an MRI Fellowship at Flinders Medical Centre in 1995.

Dr Madigan joined Dr Jones & Partners in 2009 while continuing his work at the Royal Adelaide Hospital 2 days per week.

In his spare time, Dr Madigan enjoys cycling, golf and fishing.