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Dr Lester Ong Wei Lin

Dr Lester Ong from Sengkang General Hospital

Dr Lester Ong Wei Lin

MBBS (S’pore), M Med Surg (S’pore), MRCS (Edin), FRCS (Edin)​


Sengkang General Hospital

Specialty: General Surgery

Sub-specialties: Upper Gastrointestinal & Bariatric Surgery

Clinical Appointments

  • Consultant Upper Gastrointestinal and Bariatric Service Sengkang General HospitalSengkang General Hospital


​Dr Lester Ong is a consultant in the Department of Surgery in Sengkang General Hospital. He graduated from the Yong Loo Lin School of Medicine, National University Singapore in 2008 and completed his general surgical specialist training in 2018. He is a fellow of the Royal College of Surgeons of Edinburgh.

He is also part of the trauma committee, as well as the Total Perenteral Nutrition (TPN) team within Sengkang General Hospital.

Dr Lester Ong holds concurrent academic appointments as clinical lecturer in the Yong Loo Lin School of Medicine (National University of Singapore), adjunct instructor in the Duke-NUS Graduate Medical School, and clinical teacher in the Lee Kong Chian School of Medicine (National Technological University).


  • ​MBBS (Singapore)
  • M Med Surg (Singapore)
  • MRCS (Edinburgh)
  • FRCS (Edinburgh)

Professional Appointments and Committee Memberships

  • ​Clinical lecturer, Yong Loo Lin School of Medicine
  • Adjunct instructor, Duke-NUS Medical School
  • Clinical teacher, Lee Kong Chian School of Medicine
  • Member of Junior Doctor Well-Being Committee Executive Committee, SKH (2020 – 2022)
  • Alternate member of Trauma Committee, SKH (2020 – 2022
  • Member of General Surgery Residency Program Evaluation Committee, SingHealth (2020 – 2022)
  • Member of Singhealth Procedural Safety Workgroup (2019 – 2021)
  • Member of Safety & Quality Benchmarking Subgroup, SingHealth (2019 – 2021)
  • Co-Chairperson of Clinical Quality Improvement Committee, Surgery ACP (2019 – 2020)
  • Co-Chairperson of Clinical Learning Environment Review (CLER) Workgroup 2, Surgery ACP (2019 – 2020)
  • Member of the Total Parenteral Nutrition (TPN) team, SKH
  • Co-Chairperson of Residency Committee (2016 – 2017)
  • Member of Graduate Medical Education Committee (GMEC), SingHealth (2016 – 2017)


  • ​10 years Long Service Award, 2019
  • Dean's Award for Teaching Excellence, 2019
  • Singhealth Residents' Committee Appreciation Award, 2017
  • Singhealth Outstanding Resident Award, 2014

Research Interests


  1. ​Unusual location for an ingested foreign body. Ong LWL, Kabir T, Kam JH. ANZ J Surg. 2020. doi: 10.1111/ans.16317.

  2. An unusual cause of ischemic colitis. LWL Ong, S Angkodjojo, J Huang, MH Chew. J Case Rep Images Pathol. 2020;6:100044Z11LO2020.

  3. Para-oesophageal and parahiatal hernias in an Asian acute care tertiary hospital: and underappreciated surgical condition. Koh YX, Ong LW, Lee J, Wong AS. Singapore Med J. 2016;57:669-675.

  4. Can venous base excess replace arterial base excess as a marker of early shock and a predictor of survival in trauma? Wijaya R, Ng JH, Ong L, Wong AS. Singapore Med J. 2016;57:73-76.

Research Trials