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Dr David Ong Eng Hui

Photo of Dr David Ong Eng Hui
MBChB (Bristol), MRCP (UK), FAMS (Gastroenterology)
Assistant Professor, Department of Medicine, Yong Loo Lin School of Medicine, National University of Singapore
Associate Chairman, NUH Medical Board, Risk Management and Medico-Legal
Director of Clinical Services, Division of Gastroenterology & Hepatology, NUH
Core Faculty member, Division of Gastroenterology and Hepatology
Head & Senior Consultant, Division of Gastroenterology and Hepatology, Department of Medicine, National University Hospital
Sub Specialties:
Gastroenterology & Hepatology
Medical and Surgical Conditions:
Autoimmune Hepatitis, Colonic Diverticulosis, Esophageal Cancer, Functional Dyspepsia, Gastric Cancer (Stomach Cancer), Gastroesophageal Reflux Disease (GERD), Gastrointestinal Stromal Tumour (GIST), Gilbert's Syndrome, Helicobactor Pylori, Hepatitis B, Hepatitis C, Hepatocellular Carcinoma, Inflammatory Bowel Disease (IBD), Liver Cirrhosis, Non-alcoholic Steatohepatitis (NASH), Primary Biliary Cirrhosis (PBC), Ulcerative Colitis
Special Interests:
Inflammatory Bowel Disease
Colorectal Cancer Surveillance
Fecal Microbiota Transplate / Gut Microbiome
National University Hospital
National University Cancer Institute, Singapore
National University Health System
Dr Ong is a Gastroenterologist, and Clinical Director of the Division of Gastroenterology and Hepatology. Upon graduation from the University of Bristol, UK, Dr Ong returned to work in Singapore and completed his training in Gastroenterology.

He runs the Inflammatory Bowel Disease (IBD) service and participates in research, mainly in the field of IBD. He was one of the founding members of the IBD Sg (IBD Support Group in Singapore for patients with IBD) as well as the Crohn’s and Colitis Society of Singapore. Dr Ong has given talks, interviews and keynote addresses both locally and internationally on topics relating to IBD. In addition to IBD, Dr Ong also has a special interest in the gut microbiome, and performed the first Fecal Microbiota Transplant in Singapore for patients with Clostridium Difficile infections.

Dr Ong also plays an active role in the NUH Administration and serves as the Associate Chairman of the Medical Board in the area of Risk Management and Medico-Legal. He also serves as the Co-Chair of the Giving Tree Project, which has raised over 2 million dollars for needy patients in NUH.

Apart from his clinical, research and administrative duties, Dr Ong teaches at both the undergraduate and post-graduate level, and serves as an Assistant Professor at the NUS Yong Loo Lin School of Medicine.

Awards and Honours

Gastric Cancer Fellowship at Western Hospital Gastrointestinal Cancer Unit, Melbourne
Inflammatory Bowel Disease Fellowship at St Vincent’s Hospital , Melbourne
Lead for REANIMATE Program which was first to perform Fecal Microbiota Transplant in Singapore
Advisory Board, Vifor Pharmaceuticals
Advisory Board, Abbvie Pharmaceuticals
Advisory Board, Janssen Pharmaceuticals
Advisory Board, Ferring Pharmaceuticals
Advisory Board, Takeda Pharmaceutical Company Limited
Member, Singapore Medical Council Complaints Panel

Research and Publications

  • Verschuren EC, Ong DE, Kamm MA, Desmond PV, Lust M. Inflammatory Bowel Disease Cancer Surveillance in a Tertiary Referral Hospital: Attitudes and Practice. Intern Med J. 2013 Sep 10. doi: 10.1111/imj.12285.
  • Ng SC, Tang W, Ching JY, Wong M, Chow CM, Hui AJ, Wong TC, Leung VK, Tsang SW, Yu HH, Li MF, Ng KK, Kamm MA, Studd C, Bell S, Leong R, de Silva HJ, Kasturiratne A, Mufeena MN, Ling KL, Ooi CJ, Tan PS, Ong D, Goh KL, Hilmi I, Pisespongsa P, Manatsathit S, Rerknimitr R, Aniwan S, Wang YF, Ouyang Q, Zeng Z, Zhu Z, Chen MH, Hu PJ, Wu K, Wang X, Simadibrata M, Abdullah M, Wu JC, Sung JJ, Chan FK. Incidence and phenotype of inflammatory bowel disease based on results from the Asia-pacific Crohn's and colitis epidemiology study. Asia–Pacific Crohn's and Colitis Epidemiologic Study (ACCESS) Study Group. Gastroenterology. 2013 Jul;145(1):158-165.e2. doi: 10.1053/j.gastro.2013.04.007. Epub 2013 Apr 9.
  • Ong DE, Kamm MA, Hartono JL, Lust M. Addition of Thiopurines Can Recapture Response in Patients with Crohn's Disease who Have Lost Response to Anti-Tnf Monotherapy.J Gastroenterol Hepatol. 2013 May 10. doi: 10.1111/jgh.12263.
  • Jun Liang Teh; Reuben K. Wong; Michelle Gowans; Asim Shabbir; Bhavesh Doshi; David E. Ong; Victor T. Fan. Gastric metastases of oral carcinoma resulting from percutaneous endoscopic gastrostomy placement via the introducer technique. Gastroenterology Report 2013; doi: 10.1093/gastro/got027


Appt Tel:
+65 6772 4361