Wisdom tooth Other area Tan Teck Kiang Malcolm
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Clin Asst Prof Tan Teck Kiang Malcolm

Clin Asst Prof Tan Teck Kiang Malcolm

​MBBS, MRCP, M.Med (Int Med), FRCP (Edin)

Senior Consultant

Singapore General Hospital

Specialty: Gastroenterology & Hepatology

Sub-specialties: Inflammatory Bowel Disease

Conditions Treated by this Doctor:
Acute and Chronic Viral Hepatitis, Alcoholic Liver Disease, Colonoscopy, Colorectal Cancer Screening, Crohn's Disease, Endoscopic Resection of Polyps and Early Cancers, Gastroscopy, H. Pylori Infection, Inflammatory Bowel Disease, Irritable Bowel Syndrome (IBS), Liver Cirrhosis, Microscopic colitis, Non-alcoholic Fatty Liver Disease (NAFLD), Ulcerative Colitis.

Clinical Appointments

  • Senior Consultant Gastroenterology & Hepatology Singapore General HospitalSingapore General Hospital
  • Medical Lead Inflammatory Bowel Disease Centre Singapore General HospitalSingapore General Hospital

Academic Appointments

  • Clinical Senior Lecturer, Yong Loo Lin School of Medicine
  • Core Faculty, Singhealth Gastroenterology Senior Residency Programme
  • Clinical Assistant Professor, Duke-NUS Graduate Medical School


Dr Malcolm Tan graduated from National University of Singapore, Faculty of Medicine in 2005 with MBBS (Singapore). He attained MRCP (UK) and Master of Medicine (Singapore) in 2010. He completed specialist training in Gastroenterology and Hepatology in 2015 and was awarded with a Health Manpower Development Plan (HMDP) programme. From 2015 and 2016, he completed an Inflammatory Bowel Disease (IBD) Fellowship at the renowned John Radcliffe Hospital, Oxford University Hospital in Oxford under the mentorship of Professors Simon Travis and Satish Keshav.

He is also keenly involved medical education, a clinical senior lecturer for Yong Loo Lin School of Medicine. His past and present appointments include being an Assistant Programme Director for the Singhealth Junior Residency Programme for Internal Medicine, Faculty in Singhealth Gastroenterology Senior Residency Programme and is on the Joint Committee on Specialist Training (Gastroenterology) Exit Examination Committee.

He actively participates in teaching medical ethics to specialist trainees, under the auspices of for Singapore Medical Association Centre for Medical Ethics & Professionalism.


  • FRCP (Edin), Royal Colleage of Physicians of Edinburgh (2021)
  • M. Med (Int Med), National University of Singapore, School of Medicine (2010)
  • MRCP (UK), Royal Colleges of Physicians of the United Kingdom (2010)
  • MBBS (Singapore), National University of Singapore, School of Medicine (2005)

Professional Appointments and Committee Memberships

  • Member, Joint Committee on Specialist Training (Gastroenterology) - Exit Examination Committee
  • Faculty, Singapore Medical Association - Centre for Medical Ethics & Professionalism


  • Singhealth Outstanding Faculty Award Academic in Year 2021/2022
  • Singapore General Hospital Service with a Heart Award 2022
  • Singhealth Outstanding Faculty Award Academic in Year 2020/2021
  • Singhealth Outstanding Faculty Award Academic in Year 2017/2018
  • Awarded Health Manpower Development Plan (HMDP) by Eastern Health Alliance in 2015
  • Caring Award (Silver) Eastern Health Alliance 2015
  • Best Educator Award (Medical, Postgraduate (Residency) Eastern Health Alliance 2014
  • Singhealth Outstanding Faculty Award Academic in Year 2014
  • Best Educator Award (Medical, Postgraduate (Residency) Eastern Health Alliance 2013
  • Singhealth Outstanding Faculty Award Academic in Year 2013
  • Singhealth Best Medical Officer Award for posting to Department of Cardiology, National Heart Centre (Singapore General Hospital) (From May 2010 to Nov 2010)
  • Singhealth Best House Officer Award for posting to Department of General Surgery, Changi General Hospital (From 2 May 2005 to 3 September 2005)

Research Interests


  1. Tan Yi Yuan, R Rajesh, Malcolm Tan. Oral faecal microbiota transplantation in ulcerative colitis. Lancet Gastroenterol Hepatol 2022 Apr;7(4):286. doi: 10.1016/S2468-1253(21)00469-6
  2. Shu Wen Tay, Kevin Kim Jun The, Tiing-Leong Ang, Malcolm Tan. Ulcerative colitis: STRIDE-ing beyond symptoms with new standards. Singapore Med J 2021 Nov 26. doi: 10.11622/smedj.2021173.
  3. TL Ang, KW Lim, Daphne Ang, YJ Wong, Malcolm Tan, Andrew Wong. Clinical audit of current Helicobacter pylori treatment outcomes in Singapore. Singapore Med J 2021 Sep. doi: 10.11622/smedj.2021105
  4. Malcolm Tan, Valerie Ng, Chong Teik Lim, Wei-Qiang Leow, Webber Chan. Stringent criteria for withdrawal of biologics in ulcerative colitis. Lancet Gastroenterol Hepatol 2021 Sep;6(9):687-688 doi: 10.1016/S2468-1253(21)00181-3
  5. Yu Jun Wong, Guan Sen Kew, Poh Seng Tan, Zhaojin Chen, Martin Putera, Wenjun Alexander Yip, Tiing Leong Ang, Kwong Ming Fock, Guan Huei Lee, John Hsiang, Daniel Q Huang, Andrew Kwek, Mark D Muthiah, Rahul Kumar, Malcolm Tan, Jessica Tan, Prem Harichander Thurairajah, Eng Kiong Teo, Bee Choo Tai, Seng Gee Lim. Novel albumin, bilirubin and platelet criteria for the exclusion of high-risk varices in compensated advanced chronic liver disease: A validation study. Clin Res Hepatol Gastroenterol. 2021 Nov 26;45(6):101598. doi: 10.1016/j.clinre.2020.101598.
  6. Yi Yuan Tan, Gary Sei Kiat Tay, Yu Jun Wong, James Weiquan Li, Andrew Boon Eu Kwek, Tiing Leong Ang, Lai Mun Wang, Malcolm Teck Kiang Tan. Clinical Features and Predictors of Dysplasia in Proximal Sessile Serrated Lesions. Clin Endosc. 2021 Apr 29. doi: 10.5946/ce.2020.198.
    Yu Jun Wong, Malcolm Tan, Qishi Zheng, James Weiquan Li, Rahul Kumar, Kwong Ming Fock, Eng Kiong Teo, Tiing Leong Ang. A systematic review and meta-analysis of the COVID-19 associated liver injury Ann Hepatol Aug 31;S1665-2681(20)30161-7. doi: 10.1016/j.aohep.2020.08.064.
  7. Kevin Kim Jun Teh , Shu Wen Tay , Kaina Chen , Samantha Jingyun Koh , Yu Jun Wong , Andrew Boon Eu Kwek , James Weiquan Li , Kwong Ming Fock , Eng Kiong Teo , Tiing Leong Ang , Malcolm Teck Kiang Tan. Impact of Enhanced Personal Protective Equipment on Colonoscopy Performance During the COVID-19 Pandemic. Endosc Int Open. 2020 Jun;8(6):E809-E814. doi: 10.1055/a-1167-1703. Epub 2020 Jun 2.
  8. Hussain I, Tan M, Veeraraghavan MA, Wang LM, Kwek AEB. Endosonographic Appearances of a Rare Duodenal Tumour, Brunner's Gland Hamartoma. Case Rep Gastroenterol. 2019 Jul 16;13(2):310-320. doi: 10.1159/000501674.
  9. Stephanie M Slevin, Lucy C Garner, Conor Lahiff, Malcolm Tan, Lai Mun Wang, Helen Ferry, Borgel Greenaway, Kate Lynch, Alessandra Geremia, Stephen Hughes, Karen Leavens, David Krull, Daniel J B Marks, Katherine Nevin, Kevin Page, Naren Srinivasan, Ruth Tarzi, Paul Klenerman , Simon Travis, Carolina V Arancibia-Cárcamo, Satish Keshav. Lymphocyte Activation Gene (LAG)-3 Is Associated With Mucosal Inflammation and Disease Activity in Ulcerative Colitis. J Crohns Colitis. 2020 Mar 16;jjaa054. doi: 10.1093/ecco-jcc/jjaa054.
  10. James Weiquan Li, Tiing Leong Ang, Lai Mun Wang, Andrew Boon Eu Kwek, Malcolm Teck Kiang Tan, Kwong Ming Fock, Eng Kiong Teo. Endoscopic submucosal dissection of colorectal neoplasms: an audit of its safety and efficacy in a single tertiary centre in Singapore. Singapore Med J 2019; 60(10): 526-531
  11. Ang TL, Li JW, Wong YJ, Tan YJ, Fock KM, Tan MTK, Kwek ABE, Teo EK, Ang DS, Wang LM. A prospective randomized study of colonoscopy using blue laser imaging and white light imaging in detection and differentiation of colonic polyps.Endosc Int Open. 2019 Oct;7(10):E1207-E1213
  12. Malcolm Tan, Lydia White. Book Chapter “Inpatient Care”, Inflammatory Bowel Disease Nursing Manual, Springer Nature Switzerland 2019, pp 423-433
  13. S Slevin; M Tan; C Lahiff; K Williamson; A Geremia; S Hughes; K Leavens; K Nevin; D J B Marks; R Tarzi; N Srinivasan; C Arancibia; S Keshav. P064 Intestinal expression of LAG-3 correlates with inflammatory activity and response to biological therapy in ulcerative colitis. Journal of Crohn's and Colitis, Volume 12, Issue supplement_1, 16 January 2018, Pages S125
  14. Wong YJ, Irani FG, Tan M, Teo M. Massive upper gastrointestinal bleeding post-Whipple's surgery from anastomotic varices due to mesenteric hypertension. Endoscopy. 2018 Jul;50(7):E159-E162. doi: 10.1055/a-0595-7507. Epub 2018 May 9.
  15. Tan M, East JE. Fitting Balloon Overtube-Assisted Colonoscopy (BOAC) Into the Difficult or Failed Colonoscopy Algorithm. Clin Gastroenterol Hepatol. 2018 Apr;16(4):594-595. doi: 10.1016/j.cgh.2017.11.035
  16. Tan M, Lahiff C, Bassett P, Bailey AA, East JE. Efficacy of Balloon Overtube-Assisted Colonoscopy In Patients With Incomplete or Previous Difficult Colonoscopies: A Meta-Analysis. Clin Gastroenterol Hepatol. 2017 Oct;15(10):1628-1630
  17. Kumar R, Kwek A,Tan M, Fock KM, Ang TL. Sa1187 Outcomes of Intensive Care Unit (ICU) Patients With Cholangitis Requiring Percutaneous Transhepatic Biliary Drainage (PTBD) and Endoscopic Retrograde Cholangiopancreaticography (ERCP). Gastrointestinal Endoscopy.83(5):AB247-AB8.
  18. Li JW, Tan MTK, Ang TL, Teo EK. Chemoprevention trials of GI cancers in Asia. Best Practice & Research Clinical Gastroenterology.29(6):967-78. Dec 2015.
  19. Ang TL, Fock KM, Tan MT, Assam PN, Chan ES. Impact of Asia-Pacific guidelines on gastric cancer and Helicobacter pylori infection on prevailing clinical practices. J Dig Dis. Feb 2016;17(2):122-7.
  20. Tan M. Importance of defining loss of response before therapeutic drug monitoring. Gut. 2015;64(3):516-7.Mar 2015 Tan M, Ong JP, Teo EK. Achieving deep remission in Crohn's disease: treating beyond symptoms. Annals of the Academy of Medicine, Singapore. Apr 2014;43(4):200-2.
  21. Tan M, Kwek A, Ang TL, Fock KM. Sa1668 Predictors of Persistent Ulcer At Surveillance Endoscopy in Patients With Complicated Duodenal Ulcers. Gastrointestinal Endoscopy.79(5):AB295. May 2014

Research Trials