Dr Kelvin Thia

Dr Kelvin Thia
Our Specialists

Dr Kelvin Thia


Dr Kelvin Thia graduated from the National University of Singapore’s medical school as a Dean’s list candidate in 1998.

He trained in gastroenterology at Singapore General Hospital, which is the largest tertiary acute hospital and national referral centre in Singapore with more than 1,500 beds. He is accredited by the Ministry of Health as a specialist in Gastroenterology and has been a Fellow of the Academy of Medicine (Singapore) since 2007.

In 2007 – 2008, he received the Ministry of Health Human Manpower Development Program scholarship to train in his sub-specialty interest: Inflammatory Bowel Disease (IBD). He chose to undertake this as an advanced fellow in Mayo Clinic at Rochester Minnesota, USA, under the personal mentorship of Professor William Sandborn. At Mayo Clinic, he had the opportunity to manage many IBD patients with highly-complex presentations and disease course. This enabled him to hone his skills in the diagnosis, assessment and management of such patients. Apart from seeing patients, he had the opportunity to participate in IBD-related research, culminating in publications in high-impact factor medical journals and the Centocor Inflammatory Bowel Disease Best Abstract Award in the American College of Gastroenterology Meeting 2008.

He returned to Singapore in 2008 as a Consultant in the Department of Gastroenterology and Hepatology, Singapore General Hospital. There, he managed numerous patients from all walks of life with various gastroenterology-related (digestive or liver) diseases. He also played a crucial role as a consultant in the management of patients with Crohn’s or Ulcerative colitis in the department’s multi-disciplinary IBD Centre. In his time there, he was appointed Director of Nutrition Support Services where he led a team of medical and allied health staff in providing parenteral and enteral nutritional support to patients with short bowel (short gut) syndrome and severe malabsorption, many of whom were also IBD patients. In 2011, Dr Thia received the hospital’s ´Service with A Heart´ Award for excellence in clinical service. In that same year, he was certified as a Nutrition Support Clinician (USA).

Simultaneous to providing outstanding clinical care, he also personally mentored and supervised gastroenterology trainees, junior doctors and medical students in Singapore General Hospital. He was appointed clinical tutor to the Yong Loo Lin School of Medicine, National University of Singapore, and as a Clinical Physician Faculty Member of the Internal Medicine Singhealth Residency Programme. He is active in educating the public, general practitioners and other medical colleagues on gastroenterology topics through both lectures and printed media.

Dr Thia is well-published in numerous medical journals, both for IBD and non-IBD papers. In 2011, he completed a Master’s program in Clinical Investigation at the National University of Singapore. He was a recipient of the Singhealth Research Talent Development Fund Publication Award in 2010 and the Singhealth Outstanding Publication Award in 2011. He is an invited reviewer for prestigious peer-review journals like Gastroenterology, Gut and American Journal of Gastroenterology.

Dr Thia joined Raffles Hospital as consultant gastroenterologist from 2012 to 2014 to further consolidate his clinical experience in managing gut and liver conditions in both local and international patients. He also served as a Member of the Raffles Pharmacy and Therapeutic Committee to help develop a culture of safe prescribing habits.

In August 2014, HOPE Gastroenterology and Liver Clinic was set up to fulfil his vision of providing dedicated medical care and Hope to his patients.

Sample Publications

Clin Gastroenterol Hepatol 2013; 11(1):49-54

Samuel S, Bruining DH, Loftus EV Jr, Thia KT, Schroeder KW, Tremaine WJ. Validation of the ulcerative colitis colonoscopic index of severity and its correlation with disease activity measures

Inflamm Bowel Dis 2011 Mar;17(3):809-15

Thia KT, Li M, Ling KL, Kong SC, Ooi CJ. Azathioprine is effective in corticosteroid-dependent Asian inflammatory bowel disease patients.

Inflamm Bowel Dis 2011 Jun;17(6):1257-64

Thia KT, Loftus EV Jr, Pardi DS, Kane SV, Faubion WA, Tremaine WJ, Schroeder KW, Harmsen SW, Zinsmeister AR, Sandborn WJ. Measurement of disease activity in ulcerative colitis: Inter-observer agreement and predictors of severity.

Inflamm Bowel Dis 2011 Jan;17(1):105-11

Thia KT, Faubion WA Jr, Loftus EV Jr, Persson T, Persson A, Sandborn WJ. Short CDAI: Development and validation of a shortened and simplified Crohn's disease activity index.

Gastroenterology 2010;139(4):1147-55

Thia KT, Sandborn WJ, Harmsen WS, Zinsmeister AR, Loftus EV Jr. Risk factors associated with progression to intestinal complications of Crohn's disease in a population-based cohort.

J Gastroenterol Hepatol 2010 Mar;25(3):453-68

Ooi CJ, Fock KM, Makharia G, Goh KL, Ling KL, Hilmi I, Lim WC, Thia KT, Gibson P, Gearry R, Ouyang Q, Sollano J, Manatsathit S, Rerknimitr R, Wei S, Leung WK, de Silva J, Leong WL for APAGE Working Group on IBD. The Asia-Pacific consensus on ulcerative colitis.

SGH proceedings 2010 19(1):51-6

Thia KT, Kong CS, Ooi CJ. Narrow band imaging and autofluorescence imaging for the detection and optical diagnosis of colorectal polyps

Singhealth Pulse 2009 Oct

Thia KT Recent advances in diagnostic modalities in gastroenterology.

Inflamm Bowel Dis 2009 Jan;15(1):17-24

Thia KT, Mahadevan U, Feagan BG, Wong C, Cockeram A, Bitton A, Bernstein C, Sandborn WJ. Ciprofloxacin or metronidazole for the treatment of perianal fistulas in patients with Crohn’s Disease: A randomized, double-blind, placebo-controlled pilot study.

Singapore Med J 2009 Mar;50(3):255-60

Tan HH, Lee GH, Thia KT, Ng HS, Chow WC, Lui HF. Minimal hepatic encephalopathy runs a fluctuating course: results from a three-year prospective cohort follow-up study.

Am J Gastroenterol 2008 Dec;103(12):3123-31

Thia KT, Sandborn WJ, Loftus EV, Feagan BG, Steinhart AH, Lewis JD, Hanauer SB, Persson T, Sands BE. Defining the optimal response criteria for the Crohn’s disease activity index for induction studies in patients with mildly-to-moderately active Crohn’s Disease.

Am J Gastroenterol 2008 Dec;103(12):3167-82

Thia KT, Loftus EV, Sandborn WJ, Yang SK. An update on the epidemiology of inflammatory bowel disease in Asia

Digest Dis Sci 2008 Nov;53(11):2960-8

Thia KT, Chan ES, Ling KL, Ng WY, Jacob E, Ooi CJ. Role of procalcitonin in infectious gastroenteritis and inflammatory bowel disease.

Singapore Med J 2008; 49(3):e86-9

Thia KT, Tan HH, Chuah CTH, Yap WM, Chow WC, Lui HF. Fatal acute hepatic failure occurring in a hepatitis B carrier with chronic myeloid leukemia treated with imatinib mesylate.

J Gastrointest Surg 2007 May;11(5):612-8

Thia KT, Lui HF, Ooi LL, Chung YF, Chow PK, Cheow PC, Tan YM, Chow WC. A study into the risk of exacerbation of chronic hepatitis B after liver resection for hepatocellular carcinoma.

Inflamm Bowel Dis 2006 Jan;12(1):57-61

Thia KT, W Luman, CJ Ooi. Crohn’s disease runs a more aggressive course in young Asian patients.