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Assoc Prof Hairil Abdullah

Assoc Prof Hairil Abdullah

MBBS, MMed (Anes), MSc, PhD

Senior Consultant

Director, Perioperative Services

Specialty: Anaesthesiology

Clinical Interest: Perioperative Medicine

Clinical Appointments

  • Senior Consultant Department of Anaesthesiology Singapore General HospitalSingapore General Hospital
  • Clinical Director, Office of Value Based Healthcare, Singapore General Hospital


Assoc Prof Hairil Rizal is a Senior Consultant Anaesthesiologist and the Clinical Director for the Office of Value-based Healthcare (OVBH) at SGH. He completed his anaesthesiology specialty training in Singapore, and further pursued fellowship and a MSc degree in Perioperative Medicine at the University of Toronto, Canada and University College London, UK respectively. Additionally, he holds a PhD in Clinical and Translational Science, focusing on Data Science in Healthcare, which were supported by the prestigious Lee Kuan Yew Scholarship in 2022 and the National Medical Research Council (NMRC) Research Training Fellowship in 2020. 

As a perioperative clinician, he led a transformative initiative in SGH that culminated in a one-stop Preoperative Assessment Centre, and introduced the “PREPARE” prehabilitation program for elderly patients, earning him the National Healthcare Innovation and Productivity Award in 2020. Concurrently a Clinician Scientist funded by the NMRC and a Faculty Fellow for Singapore Biodesign, Hairil is a leading figure in healthtech innovations. As the Clinical Director of OVBH, his work in operationalizing Value Based Healthcare has been recognized with the "Distinguished Champion of Change Leader Award" by SingHealth in 2022. His focus on innovation, education, and patient care positions him as a prominent leader in his field.


  • PhD (Clinical and Translational Science), DukeNUS Medical School
  • MSc (Periop Med), University College London
  • Graduate Diploma in Healthcare Management and Leadership, Singapore Management University
  • MMed (Anesthesiology), National University Singapore
  • MBBS, University of Malaya

Professional Appointments and Committee Memberships

  • Associate Professor (Research), DukeNUS Medical School
  • Co-Director, Data Science and Artificial Intelligence Lab (DSAIL), SGH


  • Lee Kuan Yew Scholarship 2022, Public Service Commission, Singapore
  • “Distinguished Champion of Change Leader Award” , SingHealth 2022
  • Best Team (Leader), Singapore Health Quality Service Award, 2021
  • NMRC Research Training Fellowship 2020
  • Care Redesign Best Practice Medal, National Healthcare Innovation Award 2020
  • SingHealth Scholarship 7th SMU-SingHealth Graduate Diploma in Healthcare Management and Leadership 2015
  • Human Manpower Development Award, MOH 2012
  • Best SingHealth Medical Officer Award 2010

Research Interests

Perioperative Medicine, Anesthesiology, Datascience in healthcare, Machine Learning


  • Abdullah HR, Li-Ming T, Marriott A, Wong TG. A comparison between the Bonfils Intubation Fiberscope and McCoy laryngoscope for tracheal intubation in patients with a simulated difficult airway. Anesth Analg 2013; 117(5): 1217-20
  • Abdullah HR, Tan TP, Vaez M, Deb C, Farag N, Jackson TD, et al. Predictors of Perioperative Acute Kidney Injury in Obese Patients Undergoing Laparoscopic Bariatric Surgery: a Single-Centre Retrospective Cohort Study. Obes Surg. 2016;26: 1493–1499
  • Chung F, Abdullah HR, Liao P. STOP-Bang Questionnaire: A Practical Approach to Screen for Obstructive Sleep Apnea. Chest. 2016/3;149: 631–638
  • Sim EY, Tan DJA, Abdullah HR. The use of computerized physician order entry with clinical decision support reduces practice variance in ordering preoperative investigations: A retrospective cohort study. Int J Med Inform. 2017;108: 29–35.
  • Sim YE, Sim S-ED, Seng C, Howe TS, Koh SB, Abdullah HR. Preoperative Anemia, Functional Outcomes, and Quality of Life After Hip Fracture Surgery. J Am Geriatr Soc. 2018;66: 1524–1531.
  • Chiew CJ, Liu N, Wong TH, Sim YE, Abdullah HR. Utilizing Machine Learning Methods for Preoperative Prediction of Postsurgical Mortality and Intensive Care Unit Admission. Ann Surg. 2020;272: 1133–1139.
  • Ke YH, Hwang KY, Thin TN, Sim YE, Abdullah HR. The usefulness of non-invasive co-oximetry haemoglobin measurement for screening pre-operative anaemia. Anaesthesia. 2021;76: 54–60.
  • Abdullah HR, Lam SSW, Ang BY, Pourghaderi A, Nguyen FNHL, Matchar DB, et al. Resuming elective surgery after COVID-19: A simulation modelling framework for guiding the phased opening of operating rooms. Int J Med Inform. 2021;158: 104665.
  • Sim XL, Kwa CX, He Y, Ng KL, Sim EY, Abdullah HR. Transforming the perioperative medicine care model: The Singapore experience. Anaesth Intensive Care. 2023 Jan 23:
  • Lim DYZ, Ke YH, Sng GGR, Tung JYM, Chai JX, Abdullah HR. Large language models in anaesthesiology: use of ChatGPT for American Society of Anesthesiologists physical status classification. Br J Anaesth. 2023;131: e73–e75

Research Trials