Niall trained at Oxford University in the UK and has extensive experience in the management of patients with gastro-intestinal cancer. He has a strong involvement in clinical research and has initiated several investigator-led clinical trials and AGITG clinical trials. He is Director of Medical Oncology at the Olivia Newton-John Cancer Research and Wellness Centre and has published over 140 manuscripts. He has also led fundraising climbs up two peaks – Kilimanjaro and Aconcagua, collectively raising over $280,000 for gastro-intestinal cancer research.