He is an Interventional Gastroenterologist with a private practice based at Greenslopes Private Hospital in Brisbane. He is also the Clinical Director of Endoscopy at Princess Alexandra Hospital. In 2015, Dr Hourigan received a Cyril Gilbert Testimonal Fund Grant from the Gallipoli Medical Research Foundation. With this funding, Dr Hourigan is conducting a trial study exploring new endoscopic techniqes to reduce the risk of the recurrence of large bowel polyps (pre-cancerous lesions) after removal at colonoscopy.