Colorectal Clinic Associates brings together two Senior Consultant surgeons Dr Charles Tsang and Dr Dean Koh who have completed their advanced training in ACGME (Accreditation Council for Graduate Medical Education) colorectal residency programmes. They have a combined experience of 30 years’ practice in colorectal surgery and were both formerly Senior Consultants and Associate Professors in the academic medical centre located in the National University Health System / Yong Loo Lin School of Medicine, National University of Singapore.