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A/Prof Shridhar Iyer

Photo of A/Prof Shridhar Iyer
  • Senior Consultant, Division of Hepatobiliary & Pancreatic Surgery, Department of Surgery, National University Hospital
  • Senior Consultant, Liver Transplantation, National University Centre for Organ Transplantation, National University Hospital
  • Senior Consultant, Division of Surgical Oncology, National University Cancer Institute, Singapore
  • Surgical Director, Liver Transplant Programme, National University Centre for Organ Transplantation, National University Hospital
  • Associate Professor, Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore
MBBS (India), MS (India), FRCS (UK), FAMS (S'pore), MBA (S'pore)
Organ Transplantation, Surgery
Adult Liver Transplantation Programme, Chronic Programme (Live Better), FAST Programme (Get Better), Hepatobiliary & Pancreatic Surgery, Hepato-Pancreato-Biliary Surgery & Liver Transplantation


A/Prof Shridhar Iyer is a Senior Consultant, Division of Hepatobiliary and Pancreatic Surgery and Surgical Director of Liver Transplant Programme at the National University Hospital. He graduated from Grant Medical College, Bombay University, India in 1994. He then underwent training in Surgical Oncology at the Tata Memorial Hospital; Mumbai. He was admitted as a Fellow to the Royal College of Surgeons of Edinburgh, UK in 1999. He completed Advanced Specialty training in General Surgery at the National University Hospital in 2005 and admitted as a Fellow to the College of Surgeons, Academy of Medicine of Singapore.

As a recipient of the Human Manpower Development Programme (HMDP) scholarship in 2006, A/Prof Shridhar Iyer went to pursue a Fellowship in Liver surgery and Liver transplantation at the Chang Gung Memorial Hospital, Taiwan. He trained in different aspects of liver, biliary surgery and living donor liver transplantation. He has published over 60 articles in  peer reviewed scientific journals and over 100  presentations at international meetings. His research interests are HPB diseases and different aspects of living donor liver transplantation and has secured several competitive grants. 

He has a keen interest in surgical education and served as the programme director for general surgery residency programme from 2010 to 2018.  He successfully led the first ACGME-I accreditation for General Surgery residency outside of United states. He Initiated, developed and designed a comprehensive surgical skills training curriculum for general surgery training.

He is the Founding Member of the Hepato-Pancreato-Biliary Association (Singapore).

He has led several quality improvement projects in the hospital including reducing length of stay and efficient discharge processes. He has developed clinical pathways and protocols for patients undergoing liver transplantation. He has contributed actively to the development of Adult Living Donor Liver transplant programme and Donor Surgery for Pediatric Living Donor Liver Transplant at the National University Hospital, Singapore.

Journals & Publications

  1. A Randomized Controlled Trial Comparing Post-operative Pain in Single-Incision Laparoscopic Cholecystectomy Versus Conventional Laparoscopic Cholecystectomy. Chang SK, Wang YL, Shen L, Iyer SG, Madhavan K. World J Surg. 2015 Apr;39(4):897-904.
  2. Metabolic syndrome after a liver transplantation in an Asian population. Tan HL, Lim KB, Iyer SG, Chang SK, Madhavan K, Kow AW. HPB (Oxford). 2015 Aug;17(8):713-22
  3. Outcomes of resection of giant hepatocellular carcinoma in a tertiary institution: does size matter? Thng Y, Tan JK, Shridhar IG, Chang SK, Madhavan K, Kow AW. HPB (Oxford). 2015 Nov;17(11):988-93
  4. Comparative study and systematic review of laparoscopic liver resection for hepatocellular carcinoma. Leong WQ, Ganpathi IS, Kow AW, Madhavan K, Chang SK. World J Hepatol. 2015 Nov 28;7(27):2765-73
  5. Long-Term Oncological Safety of Minimally Invasive Hepatectomy in Patients with Hepatocellular Carcinoma: A Case-Control Study. Chang SK, Tay CW, Shen L, Iyer SG, Kow AW, Madhavan K. Ann Acad Med Singapore. 2016 Mar;45(3):91-7
  6. Outcomes of Percutaneous Cholecystostomy for Acute Cholecystitis. Pang KW, Tan CH, Loh S, Chang KY, Iyer SG, Madhavan K, Kow WC. World J Surg. 2016 Nov;40(11):2735-2744
  7. Delayed Presentation of Acute Cholecystitis: Comparative Outcomes of Same-Admission Versus Delayed Laparoscopic Cholecystectomy. Tan JK, Goh JC, Lim JW, Shridhar IG, Madhavan K, Kow AW. J Gastrointest Surg. 2017 Feb 27.
  8. Greater hypertrophy can be achieved with associating liver partition with portal vein ligation for staged hepatectomy compared to conventional staged hepatectomy, but with a higher price to pay? Chia DKA, Yeo Z, Loh SEK, Iyer SG, Bonney GK, Madhavan K, Kow AWC. Am J Surg. 2017 Aug 2
  9. ALPPS for Hepatocellular Carcinoma Is Associated with Decreased Liver Remnant Growth. Chia DKA, Yeo Z, Loh SEK, Iyer SG, Madhavan K, Kow AWC. J Gastrointest Surg. 2018 Jun;22(6):973-980
  10. Does persistent anti-HBc positivity influence the prognosis of HBsAg-negative hepatocellular carcinoma? comparative outcomes of anti-Hbc positive versus anti-Hbc negative non-B non-C HCC. Law JH, Tan JKH, Wong KYM, Ng WQ, Tan PS, Bonney GK, Iyer SG, Krishnakumar M, Kow WCA.  HPB (Oxford). 2018 Aug 4
  11. Development of a new patient-derived xenograft humanised mouse model to study human-specific tumour microenvironment and immunotherapy. Zhao Y, Shuen TWH, Toh TB, Chan XY, Liu M, Tan SY, Fan Y, Yang H, Iyer SG, Bonney GK, Loh E, Chang KTE, Tan TC, Zhai W, Chan JKY, Chow EK, Chee CE, Lee GH, Dan YY, Chow PK, Toh HC, Lim SG, Chen Q.  Gut. 2018 Oct;67(10):1845-1854
  12. Solid Organ Transplantation in Singapore. Kee T, Shridhar Ganpathi I, Sivathasan C, Kong S, Premaraj J, Anantharaman V. Transplantation. 2018 Sep;102(9):1397-1400
  13. An international multicenter study of protocols for liver transplantation during a pandemic: A case for quadripartite equipoise Chew CA, Iyer SG, Bonney GK , et al.. J Hepatol. 2020;S0168-8278(20)30342-1. 
  14. Optimization of Outpatient Transplantation Services During the COVID-19 Pandemic: A South-East Asian Tertiary Organ Transplant Centre Experience Tan JKH, Pang NQ, Bonney GK, Kow AWC, Vathsala A, Iyer SG. Br J Surg.  2020 Aug 21