Dr. Denis Cheong Mun Onn

General Surgery

Credentials MBBS(S’pore) FRCS(Glasgow)
Language English, Mandarin Chinese, Bahasa Melayu

Specialty Interests: Colorectal and Laparoscopic Surgery

Dr Denis Cheong is a Fellow of the Royal College of Physicians and Surgeons of Glasgow and was awarded a Ministry of Health Fellowship to do subspecialty training in Colorectal Surgery in the Cleveland Clinic, Florida, USA. On returning to Singapore, Dr Cheong was responsible for developing the Colorectal Unit in the Department of Surgery in Tan Tock Seng Hospital. He played a key role in developing the Oncology services in TTSH and led the development of laparoscopic (keyhole) colorectal surgery in the hospital. He was also Surgical Director of the Digestive Disease Centre and held visiting consultant appointments with KK Women’s and Children’s Hospital, John Hopkins Singapore and the National Cancer Centre, Singapore. Dr Cheong left TTSH and joined the PanAsia Surgery Group in 2009.

Dr Cheong’s expertise encompasses the full range of colorectal surgery, including therapeutic colonoscopy, the treatment of piles, and complex perianal disorders. He has extensive experience in managing anal conditions like hemorrhoids, fistula and fissure, as well as treatment of colorectal cancer and diverticular disease. He is most well known for his expertise in the treatment of colorectal cancer, and is one of the pioneers in laparoscopic and minimally invasive colorectal surgery in Singapore. He is an expert endoscopist having performed more than 12,000 colonoscopies over the past 20 years and more than 180 laparoscopic colorectal operations.

Dr Cheong is a Founding Member of the Society of Colorectal Surgeons of Singapore, and a Council Member of the College of Surgeons, Academy of Medicine, Singapore. He was committed to undergraduate and postgraduate training as a Senior Clinical Lecturer and examiner for the MBBS finals with the NUS Yong Loo Lin School of Medicine. Dr Cheong is also actively involved in humanitarian work and was a member of the Singapore earthquake relief team to Turkey in 1999.