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Clin Asst Prof Annalisa Ng Ya-Lyn

Clin Asst Prof Ng

MBBS (Singapore), MRCS(Edin), M.Med (Surg), FRCSEd (General Surgery)


Specialty: General Surgery

Sub-specialties: Upper Gastrointestinal & Bariatric Surgery, Metabolic & Bariatric Surgery, Minimally Invasive Surgery, Therapeutic Endoscopy, Hernia Surgery

Clinical Appointments

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


Dr Annalisa Ng is currently a consultant at the Department of Surgery at Changi General Hospital (CGH). She graduated with MBBS from the NUS Yong Loo Lin School of Medicine (YLLSoM) in 2010, and subsequently obtained her Masters of Medicine (Surgery) from National University of Singapore in 2016. She then went on to obtain her fellowship of the Royal College of Surgeons (Edinburgh) in 2017, and was awarded the College of Surgeons, Singapore, Gold Medal in 2018 for being the top candidate in the Surgical Exit Examination.

Her subspeciality interests are in upper gastrointestinal, metabolic and bariatric Surgery, hernia surgery, minimally invasive surgery as well as therapeutic endoscopy.


  • FRCSEd (Gen Surg), 2017
  • MMed (Surg), 2017
  • MBBS (S’pore), 2010 

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
  • Member - Obesity & Metabolic Surgery Society Singapore (OMSSS)
  • Physician Faculty Member - SingHealth General Surgery Residency Programme
  • Fellow (Chapter of General Surgery), Academy of Medicine, Singapore


  • Singhealth Junior Doctors Award for Best House Officer, 2011
  • Singhealth Residency Outstanding Resident Award, 2014
  • College of Surgeons’ Singapore Gold Medal (General Surgery) – awarded to the top performing candidate in the Surgical Exit Examination, 2018

Research Interests


  • Ng YA, Tan QT, Wan WK, Goh YC
    A case report of wound site seeding following cholecystectomy for dysplastic gallbladder.
    Int J Surg Case Rep. 2017;35:87-93.
  • Ng YA, Lee J, Zheng XJ, Nagaputra JC, Tan SH, Wong SA
    Giant pedunculated oesophageal liposarcomas: A review of literature and resection techniques.
    Int J Surg Case Rep. 2019;64:113-119.
  • Ng, A.Y, Lin, J., Ching, S.S. et al. Does primary closure of direct inguinal hernia defect during laparoscopic mesh repair reduce the risk of early recurrence?. Hernia 24, 1093–1098 (2020).
  • Ching SS, Lim TW, Ng YLA. Recurrent esophageal candidiasis: a case report of different complications. Ann Esophagus 2020. doi: 10.21037/aoe-20-29

Research Trials