Dr. Koh Dennis

General Surgery

Credentials B. Med Sci (Nottingham), MBBS (Nottingham), MMed (Surgery), FRCS(Edingburgh), FAMS (General Surgery)
Language English, Mandarin, Teochew, Hokkien

Dr Dennis Koh is a fully qualified and trained general surgeon, with subspecialty training in Colorectal Surgery. He is currently the Medical Director and Senior Consultant Surgeon at Colorectal Practice.

Dr Koh graduated from University of Nottingham, UK. Prior to obtaining his medical degrees, Dr Koh also took a year off and obtained a Bachelor in Medical Science. He further his medical education and embarked on his surgical training in Singapore. He obtained his Master of Medicine in Surgery from National University of Singapore in 2005. He proceeded to complete his advance surgical training with Singapore General Hospital and became a fellow of the Royal College of Surgeons of Edinburgh in 2009. He was admitted as a Fellow of the Academy of Medicine (Surgery) of Singapore in the same year. He was awarded the SingHealth Health Manpower Development Plan (HMDP) Award and further his training in Hôpitaux Universitaires de Genève (HUG), Switzerland. Prior to setting up his own private practice, Dr Koh was a consultant surgeon in the Department of Colorectal Surgery in the Singapore General Hospital, one of the most progressive and comprehensive Colorectal Unit in Singapore.

Dr Koh has special interest in colorectal surgery and has performed numerous colon and rectal surgeries, both open and minimally invasive. He believes that each surgery should be adapt and tweak to each individual patient’s unique case and situation with minimal impact on patient’s lifestyle. Among the repertoire of surgical techniques Dr Koh offers include laparoscopic (key-hole), single port surgery, robotic surgery and transanal endoscopic operation (TEO). Dr Koh is also adept in the field of Endoscopy (colonoscopy and gastroscopy). To date, he has performed more than ten thousands endoscopic procedures, including endoscopic stenting and endoscopic mucosal resection (EMR).

Another field of interest Dr Koh excels in is proctology. During his fellowship in Geneva, he further honed his skills in proctology and pelvic floor disorders. These include conditions like haemorrhoids (piles), anal fistula, anal fissures, anal abscesses, functional constipation and faecal incontinence.

Besides his passion for clinical practice, Dr Koh firmly believes in the importance of training the next generation of surgeons. He held several teaching appointments including Assistant Professor with Duke-NUS Graduate Medical School and Clinical Senior Lecturer in Yong Loo Lin School of Medicine, National University of Singapore. As a core faculty member of the SingHealth General Surgery Residency Program, he was actively involved in residency teaching and surgical skills training. He conducted and trained medical students and surgical trainees in endoscopy and laparoscopic skills with the use of stimulation machines. He also conducted many animal and cadaveric workshop to teach local and overseas surgical trainees and surgeons. He was consistently ranked highly by his medical students and surgical trainees for his teachings.

Dr Koh believes that patient care lies not only in a good surgical outcome but also with good communication and information sharing with both the patients and their loved ones. Dr Koh is a firm believer of providing adequate and accurate information to the patients to aid them to come to good informed decisions with regards to their health and treatments. For his efforts in patient care, he was awarded numerous awards and accolades from both his patients and the management during his time in public service.
Dr Koh provides a complete Colorectal as well as general Surgical services:-

  • Endoscopy services (Colonoscopy & OGD) in screening, diagnosis and therapeutic procedures
  • Prevention, diagnosis and treatment of Colorectal Cancer
  • Minimally invasive surgery (including robotic surgery) in bowel surgery for both benign and malignant diseases
  • Perianal conditions like haemorrhoids, anal fistula and anal fissure
  • Pelvic floor and functional bowel disorders like irritable bowel syndrome, constipation and faecal incontinence.
  • Surgical management of inflammatory bowel disorders
  • General Surgical management (usually laparoscopic) of gallbladder, hernia and appendicitis