Credentials MBChB, MMed (Surg), MSc, FRCSEd, FAMS
Language English, Mandarin Chinese, Behasa Melayu, Behasa Indonesia
Associated Treatments

Liver cancer (Hepatocellular Carcinoma) and liver tumours
Liver cysts and liver abscesses
Liver metastases from other cancers (eg. colorectal cancer)
Pancreatic cancer, pancreatic tumours, pancreatic cysts
Gallstones and bile duct stones
Gallbladder cancer
Bile duct cancer (Cholangiocarcinoma) and bile duct diseases
Spleen tumours and other diseases
Neuroendocrine tumours
Gastrointestinal Stromal (GIST) tumours
Upper GI endoscopy and colonoscopy
Abdominal pain
Hernias – inguinal, femoral, umbilical, ventral, incisional
Perforated ulcers or perforated bowel
Bleeding gastrointestinal tract conditions
Peptic ulcer disease
Piles, anal fissures, anal fistulas, anal abscesses
Lumps and bumps
Abscesses and carbuncles
Raised tumor markers (CEA, CA19-9, AFP)

Special Treatments

Liver Transplantation
Laparoscopic and Robotic Surgery


Dr Wong Jen San is a general surgeon at Mount Elizabeth Hospitals, Singapore.

He specialises in gastrointestinal and hepatobiliary-pancreatic (liver, pancreas, gall bladder and bile duct) conditions and liver transplantation.

Dr Wong obtained his Bachelor of Medicine and Bachelor of Surgery from the University of Leicester, UK, in 1998 and received his early surgical training in the UK. He subsequently completed his Advanced Specialty Training in general surgery in Singapore General Hospital in 2008 obtaining the Fellowship of the Royal Colleges of Surgeons in Edinburgh and Fellowship of the Academy of Medicine, Singapore in general surgery.

He underwent further training in advanced hepatobiliary surgery and liver transplantation during his Human Manpower Development Programme Clinical Fellowship in Living Donor Liver Transplantation in Japan under Professor Shinji Uemoto at Kyoto University Hospital and Professor Yukihiro Inomata at Kumamoto University Hospital.

Dr Wong is a visiting consultant to the liver transplant programme at Singapore General Hospital and was involved in the earliest successful split liver transplant at Singapore General Hospital (SGH) and the earliest combined heart-liver transplant in Asia in 2009. He is also one of the earliest surgeons to perform robotic liver and pancreas surgeries in SGH.


Pancreatic lymphangioma: two case reports from an institutional experience with a rare entity and review of literature
Tan-Garcia A, Lee SY, Wong JS, Ho TW, Ng KS, Lim KHT
J Pancreatology 2022;5:98–109

Early experience with robot-assisted laparoscopic hepatobiliary and pancreatic surgery in Singapore: single-institution experience with 20 consecutive patients.
Goh BK, Lee SY, Chan CY, Wong JS, Cheow PC, Chung AY, Ooi LL.
Singapore Med J. 2018 Mar;59(3):133-138.

National Cancer Centre Singapore Consensus Guidelines for Hepatocellular Carcinoma.
Chow PK, Choo SP, Ng DC, Lo RH, Wang ML, Toh HC, Tai DW, Goh BK, Wong JS, Tay KH, Goh AS, Yan SX, Loke KS, Thang SP, Gogna A, Too CW, Irani FG, Leong S, Lim KH, Thng CH.
Liver Cancer. 2016 Apr;5(2):97-106.

Robotic hepatectomy: initial experience of a single institution in Singapore.
Kam JH, Goh BK, Chan CY, Wong JS, Lee SY, Cheow PC, Chung AY, Ooi LL.
Singapore Med J. 2016 Apr;57(4):209-14.

First experience with robotic spleen-saving vessel preserving distal pancreatectomy in Singapore: report of three consecutive cases.
Goh BK, Wong JS, Chan CY, Cheow PC, Ooi LL, Chung AY.
Singapore Med J. 2016 Jan 25.

Laparoscopic liver resection for posterosuperior and anterolateral lesions-a comparison experience in an Asian centre.
Teo JY, Kam JH, Chan CY, Goh BK, Wong JS, Lee VT, Cheow PC, Chow PK, Ooi LL, Chung AY, Lee SY.
Hepatobiliary Surg Nutr. 2015 Dec;4(6):379-90.

Factors associated with and outcomes of open conversion after laparoscopic minor hepatectomy: initial experience at a single institution.
Goh BK, Chan CY, Wong JS, Lee SY, Lee VT, Cheow PC, Chow PK, Ooi LL, Chung AY.
Surg Endosc. 2015 Sep;29(9):2636-42.

Number of nodules, Child-Pugh status, margin positivity, and microvascular invasion, but not tumor size, are prognostic factors of survival after liver resection for multifocal hepatocellular carcinoma.
Goh BK, Chow PK, Teo JY, Wong JS, Chan CY, Cheow PC, Chung AY, Ooi LL.
J Gastrointest Surg. 2014 Aug;18(8):1477-85.

Evaluation of the Sendai and 2012 International Consensus Guidelines based on cross-sectional imaging findings performed for the initial triage of mucinous cystic lesions of the pancreas: a single institution experience with 114 surgically treated patients.
Goh BK, Thng CH, Tan DM, Low AS, Wong JS, Cheow PC, Chow PK, Chung AY, Wong WK, Ooi LL.
Am J Surg. 2014 Aug;208(2):202-9.

Are the Sendai and Fukuoka consensus guidelines for cystic mucinous neoplasms of the pancreas useful in the initial triage of all suspected pancreatic cystic neoplasms? A single-institution experience with 317 surgically-treated patients.
Goh BK, Tan DM, Thng CH, Lee SY, Low AS, Chan CY, Wong JS, Lee VT, Cheow PC, Chow PK, Chung AY, Wong WK, Ooi LL.
Ann Surg Oncol. 2014 Jun;21(6):1919-26.


Involved in earliest combined heart-liver transplant in Asia in 2009
One of the earliest surgeons to perform robotic liver and pancreas surgeries in SGH
Member of the Steering Committee for the AHCC06 trial
Founding member of the Hepatopancreatobiliary Association Singapore (HPBAS)


Hepatopancreatobiliary Association Singapore (HPBAS)

Awards and Honours

Health Manpower Development Plan Award
National Medical Research Council Research Fellowship
MBChB Part II Examinations: Merit Award

Fellowships and Accreditations

Clinical Fellowship in advanced hepatobiliary surgery and Living Donor Liver Transplantation at Kyoto University Hospital and Kumamoto University Hospital, Japan
Fellow of the Academy of Medicine Singapore, FAMS
Fellow of the Royal College of Surgeons of Edinburgh, FRCSEd (Gen)