Dr Carrigan works as a Senior Staff Specialist at Wollongong, Shoalhaven and Shellharbour Emergency Departments. He is a fellow of the Australasian College for Emergency Medicine and the Royal College of Emergency Medicine in the United Kingdom (UK), and is a diplomate in Anaesthetics from the Royal College of Anaesthetists (UK).
Currently Dr Carrigan is a Clinical Associate Professor at the University of Wollongong Graduate Medical School and is active in facilitating research between UOW and Illawarra Shoalhaven Local Health District. He has sports medical experience with St George – Illawarra National Rugby League (team doctor) and he assists in world surfing league and action sporting events.
Dr Carrigan's other emergency interests include airway management and ultrasound.