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Clin Asst Prof Annalisa Ng Ya-Lyn

Clin Asst Prof Ng

Clinical Appointments

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


Dr Ng is a Consultant at the Department of Surgery in Changi General Hospital. Her clinical interests are in upper gastrointestinal, metabolic and bariatric surgery, hernia surgery, minimally invasive surgery as well as therapeutic endoscopy. She graduated with an MBBS from the National University of Singapore (NUS) Yong Loo Lin School of Medicine in 2010 and subsequently obtained her Masters of Medicine (Surgery) from NUS in 2016. She obtained her Fellowship of the Royal College of Surgeons (Edinburgh) in 2017 and was awarded the Gold Medal from the College of Surgeons, Singapore, for being the top candidate in the Surgical Exit Examination in 2018.
Dr Ng furthered her specialist training by completing a year-long fellowship in minimally invasive upper gastrointestinal oncology surgery with a focus on robotic-assisted oesophagectomy at the University Medical Centre Utrecht, Netherlands; a pioneer in the use of robotic-assisted surgery for such procedures. 


  • FRCS General Surgery (Edinburgh) 2017
  • MMED Surgery (Singapore) 2016
  • MBBS (Singapore) 2010

Professional Appointments and Committee Memberships

  • Clinical Assistant Professor, Duke-NUS, 2019 – present 
  • Clinical Lecturer, NUS Yong Loo Lin School of Medicine, 2019 – present
  • Clinical Lecturer, NTU Lee Kong Chian School of Medicine, 2019 – present
  • Physician Faculty Member, SingHealth General Surgery Residency Programme, 2017 – present
  • Member, Upper Gastrointestinal International Robotic Association (UGIRA), 2023 – present
  • Member, International Society for Diseases of the Esophagus (ISDE), 2022 – present
  • Fellow (Chapter of General Surgery), Academy of Medicine, Singapore, 2018 – present


  • Best Team Award, SingHealth Nursing Awards, 2023
  • Star Award, Singapore Health Quality Service Awards, 2022
  • SingHealth Manpower Development Plan Award (Minimally Invasive Upper GI Oncology Surgery with a Focus on Minimally Invasive Esophagectomy), 2020
  • Gold Medal (General Surgery), College of Surgeons, Singapore, 2018
  • Outstanding Resident Award, SingHealth Residency Programme, 2014
  • Best House Officer, SingHealth Junior Doctors Award, 2011

Research Interests


  • Ching SS, Lee PC, Lim CH, Wong ASY, Ng AY, Lin J, Lee J. Study on weight loss outcomes after bariatric surgery to determine a metric least influenced by preoperative BMI. Int J Obes (Lond). 2023 Oct;47(10):993-999. doi: 10.1038/s41366-023-01349-7. Epub 2023 Jul 21. PMID: 37479794.
  • Arámbulo RH, Ya-Lyn AN, Hillegersberg RV, Ruurda J. Robot-Assisted Esophageal Leiomyosarcoma Resection. Clin Surg. 2023; 8: 3644
  • Ching SS, Lim TW, Ng YL A. Recurrent esophageal candidiasis: a case report of different complications. Ann Esophagus 2020. doi: 10.21037/aoe-20-29
  • 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, Ng YL A, Lee J, Lin J, Wong ASY, Loh WJ, Khoo JCJ. A367 Improvement of Type II Diabetes Mellitus after Laparoscopic Roux-en-Y Gastric Bypass and Laparoscopic Sleeve Gastrectomy from a Single Centre. Surgery for Obesity and Related Diseases 2019;15(10):S150-. Doi:10.1016/j.soard.2019.08.308
  • 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. doi: 10.1016/j.ijscr.2019.10.006. Epub 2019 Oct 7.
  • 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. doi: 10.1016/j.ijscr.2017.04.006. Epub 2017

Research Trials