Dr Quan Wai Leong graduated from the Faculty of Medicine at the National University of Singapore in 1992 and received his Membership from the Royal Colleges of Physicians (MRCP UK) in 1998. He then furthered his advanced specialty training in Gastroenterology at Tan Tock Seng Hospital before spending 1 year in Hong Kong at Prince of Wales Hospital as a visiting scholar where he received his sub-specialty training in Interventional Endoscopy, including luminal stent placement, ERCP and Cholangioscopy as well as Endoscopic Ultrasound (EUS/FNA) and various Endoscopic Mucosal Resection technique (EMR/ESD). Dr Quan obtained his Fellowship from the Royal College of Physicians (FRCP Edin) and is currently a Fellow of the Academy of Medicine, Singapore (FAMS) in Gastroenterology.

Dr Quan provided his service to Khoo Teck Puat and Tan Tock Seng Hospital as a visiting consultant in advanced therapeutic endoscopy including ERCP, Spyglass cholangioscopy and EUS.