Dr Gill is an Interventional Endoscopist with extensive clinical experience in the endoscopic diagnosis and management of diseases of the gastrointestinal tract. His clinical practice is enhanced by his interest in evidence based treatment of disorders of the gastrointestinal tract, the bile duct, the pancreas and the liver. He has published widely and participated in research covering a wide spectrum of gastroenterology and liver related diseases and their outcomes.

Dr Gill undertook his physicians training at the Royal North Shore (RNS) Hospital and Gastroenterology fellowship at the Royal Prince Alfred (RPA) Hospital. He went on to complete an Advanced Fellowship in ERCP (Endoscopic Retrograde Cholangio Pancreatography), EUS (Endoscopic Ultrasound) and Interventional Endoscopy at the premier Duke University Hospital in North Carolina (U.S.A) which is ranked among the best in the country; he was also a Faculty member at Duke University Hospital until his return to Sydney.

Dr Gill is a member of the Gastroenterological Society of Australia (GESA); and a fellow of the Royal Australian College of Physicians (FRACP).