Dr Galligan trained locally graduating from the University of Tasmania medical school and initially training at the Royal Hobart hospital, completing basic physician training and beginning training in cardiology. He then continued cardiological training at the Royal Prince Alfred Hospital in Sydney and the Children’s Hospital in Sydney where he undertook training in paediatric cardiology. He then subsequently completed an interventional cardiological fellowship in Canada.
Following return to Hobart in 1990 he has worked jointly in private practice and as a VMO in cardiology at the Royal Hobart hospital. He has an ongoing involvement with the medical school. His practice includes all aspects of general cardiology with special interests in interventional and paediatric cardiology.