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Clin Asst Prof Ching Siok Siong

Clin Asst Prof Ching

Clinical Appointments

  • Consultant Surgery Changi General HospitalChangi General Hospital
  • Consultant Upper Gastrointestinal & Bariatric Surgery Changi General HospitalChangi General Hospital


Dr Ching Siok Siong is a consultant with the Department of Surgery at Changi General Hospital (CGH). After graduating with his basic medical degree at National University in Ireland in 1997, he embarked on his surgical training in Wales, United Kingdom. He went on to obtain an MD in surgery after completing his research work on different types of ultrasonic scalpels in laparoscopic surgery in Leeds, United Kingdom.

Upon returning to Singapore in 2009, Dr Ching completed his advanced specialty training at CGH. He then obtained fellowship from the Royal College of Surgeons of Edinburgh and was awarded his specialist accreditation by the Singapore Medical Council in 2016. His current interests include minimally invasive surgical treatment of upper gastrointestinal conditions, obesity and metabolic conditions.


  • FRCS (Gen Surg), Royal College of Surgeons of Edinburgh, 2016
  • MMed (Surgery), National University of Singapore, 2014
  • MD, University of Leeds, 2009
  • MRCS, Royal College of Surgeons in Ireland, 2002
  • MB BCh BAO, National University of Ireland, 1997
  • B Med Sc, National University of Ireland, 1997

Professional Appointments and Committee Memberships

  • Clinical Assistant Professor - Duke-NUS
  • Clinical Lecturer, NUS Yong Loo Lin School of Medicine
  • Clinical Lecturer, NTU Lee Kong Chian School of Medicine
  • Clinical Physician Faculty, SingHealth General Surgery Residency Program
  • Member of GP CME Committee of Changi General Hospital


  • Finalist in Medical Oral Competition Eastern Alliance Scientific Meeting on 5 November 2015.
  • Second Prize with S$3,000 for Best Research Paper Award 2014 in Singapore Medical Journal at Singapore Medical Association Annual Dinner on 16 May 2015.
  • Second Prize for Medical Poster Competition at Eastern Health Alliance Scientific Meeting on 22-23 November 2012.
  • Gold for SHBC Best Poster Award – Health Professions Education at Singapore Health & Biomedical Congress on 28-29 September 2012.
  • Third Prize for Medical Poster Competition at Eastern Health Alliance Inaugural Scientific Meeting on 18-19 November 2011.
  • Finalist in Medical Oral Competition at Eastern Health Alliance Inaugural Scientific Meeting on 17 November 2011.
  • Finalist in the Technology Award Session of European Association for Endoscopic Surgery Congress on 6 July 2007.
  • Poster of Distinction at the Society American Gastrointestinal Endoscopic Surgeon Annual Scientific Session on 18-22 April 2007.
  • Poster of Distinction at the Association of Surgeons in Great Britain and Ireland Annual Scientific Meeting on 3-5 May 2006.
  • Six of the Best Papers in Laparoscopy category at the Association of Surgeons in Great Britain and Ireland Annual Scientific Meeting on 15 April 2005.
  • Title of College Scholar, University College Cork, October 1992, for achieving First Class Honours in first year Medicine.

Research Interests

  • Bariatric Surgery
  • Hernia Surgery
  • Surgical Energy Devices
  • Surgical Simulation Teaching
  • Surgical Skills Training
  • Upper Gastrointestinal Surgery
  • Helicobacter Pylori Testing and Treatment
  • Bowel Sounds Study


  • Ching SS, Lim TW, Ng YLA. Recurrent esophageal candidiasis: A case report of different complications. Annals of Esophagus 2021 (4):11.
  • Ng AY, Lin J, Ching SS, Lee J, Wong ASY. Does primary closure of direct inguinal hernia defect during laparoscopic mesh repair reduce the risk of early recurrence? Hernia 2020 Oct; 24(5):1093-1098.
  • Farah BL, Tan CS, Ching SS, Chee MYM. Primary splenic leiomyosarcoma as an exceptionally rare cause of ruptured splenomegaly – A case report and review of primary splenic sarcomas. Human Pathology: Case Reports 2020 (22) 200452.
  • Tay JS, Ching SS, Tan YK, Kum SWC. Endovascular retrograde recanalisation in Asian critical limb ischaemia patients. ANZ J Surg 2017 Sep;87(9):E61-E64.
  • Ching SS, Cheng AK, Kong LW, Lomanto D, So JB, Shabbir A. Early outcomes of laparoscopic sleeve gastrectomy in a multi-ethnic Asian cohort. Surgery for Obesity and Related Diseases 2016; 12(2): 330-337.
  • Wong AS, Ching SS, Long AS. The use of a second biopsy from the gastric body in the detection of Helicobacter pylori using rapid urease test during gastroscopy. Singapore Medical Journal 2014; 55(12): 644-647.
  • Ching SS, Mok CW, Koh YX, Tan SM, Tan YK. Assessment of surgical trainees’ quality of knot tying. Journal of Surgical Education 2013; 70(1): 48-54.
  • Ching SS, Tan YK. Spectral analysis of bowel sounds in intestinal obstruction using an electronic stethoscope. World Journal of Gastroenterology 2012; 18(33): 4585-4592.
  • Ching SS, Sarela AI, Hayden JD, McMahon MJ. Randomised clinical trial of torsional versus linear mode ultrasonically activated shears for laparoscopic cholecystectomy. Surgical Endoscopy 2009; 23(7): 1506-1511.
  • Ching SS, Verbeke CS, Homer-Vanniasinkam S, McMahon MJ. Comparison of torsional and linear mode ultrasonic coagulating shears for sealing veins. Journal Laparoendoscopic Advanced Surgical Techniques A 2008; 18(6): 819-824.
  • Ching SS, Sarela AI, Dexter SP, Hayden JD, McMahon MJ. Comparison of early outcomes of laparoscopic ventral hernia repair between nonobese and morbidly obese patient populations. Surgical Endoscopy 2008; 22(10): 2244-2250.
  • Ching SS, Sabanathan S, Jenkinson LR. Treatment of Helicobacter pylori in surgical practice: A randomised trial of triple versus quadruple therapy in a rural district general hospital. World Journal of Gastroenterology 2008; 14(24): 3855-3860.
  • Ching SS, McMahon MJ. Comparison of linear and torsional mode ultrasonic coagulating shears for the sealing of medium- to large-sized arteries. Surgical Endoscopy 2007; 21(7): 1165-1169.
  • Ching SS, Rao MM, Ali A, Yeluri S, Chalmers AG, McMahon MJ. Chronic pancreatitis complicated by pancreaticopericardial fistula. Surgical Practice 2007; 11(3): 130-133.
  • Rao M, Yeluri S, Ali A, Ching SS, McMahon MJ. Editor’s quiz: GI snapshot. An unusual cystic lesion of liver. Gut 2006 May: 55(5): 742, 748.
  • Yeluri S, Rao M, Ali A, Ching SS, Gleghill R, McMahon MJ. Endometrial cyst of liver – A review. The Official Journal of the International Hepato Pancreato Biliary Association 2005; 7: 40-41.
  • Ching SS, Muralikrishnan VP, Whiteley GSW. Relaparotomy: A 5-year review of indications and outcome. International Journal of Clinical Practice 2003; 57(4): 333-337.
  • Muralikrishnan VP, Ching SS, Whiteley GSW. Image of the Month. Leiomyosarcoma. Gastroenterology 2002; 122(3): 605, 843.
  • Ching SS, Bhalerao S, Jenkinson LR. Quadruple and Triple Therapies for Helicobacter pylori: A Compliance and Satisfaction Study. Gastroenterology Today 2000; 10(1): 8-10.

Research Trials