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Prof Marcus Ong Eng Hock

Prof Marcus Ong Eng Hock

​​​​​​​​​MBBS, FRCSEd (A&E), FAMS, MPH​

Senior Consultant

Singapore General Hospital

Specialty: Emergency Medicine

Clinical Interest: Emergency Cardiac Care, Emergency Pre-hospital Care

Conditions Treated by this Doctor:
Cardiac Arrest (Sudden Cardiac Death).

Clinical Appointments

  • Senior Consultant Emergency Medicine Singapore General HospitalSingapore General Hospital

Academic Appointments

  • Assoc Prof SingHealth Duke-NUS Medicine Academic Clinical Programme


A/Prof Marcus Ong is a Senior Consultant, Director of Research, and Clinician Scientist at the Department of Emergency Medicine in Singapore General Hospital (SGH). He is also the Director for the Health Services Research and Biostatistics Unit, Division of Research, in SGH. He serves as a Senior Consultant at the Hospital Service Division and Director for the Unit for Pre-hospital Emergency Care in Ministry of Health, Singapore. He is also Associate Professor at Duke-National University of Singapore Medical School.

His academic credentials include a medical degree from the National University of Singapore in 1993. A/Prof Ong obtained his Fellowship in emergency medicine with the Royal College of Surgeons, Edinburgh, Scotland, and the Academy of Medicine, Singapore. He completed his fellowships in emergency medical services and pre-hospital care in Canada and USA. A/Prof Ong obtained his Master of Public Health at Virginia Commonwealth University in 2005.

A/Prof Ong has been actively involved in research, education and clinical services for more than 10 years. His research studies focus predominantly on pre-hospital emergency care, medical devices, and health services research. He has published 100 papers in international and local peer-reviewed journals.


  • MBBS, National University of Singapore (1993)
  • FRCS (A&E), Royal College of Surgeons (FRCS), Accident & Emergency Edinburgh (1999)
  • Masters of Public Health, Virginia Commonwealth University (2005)
  • Fellow, Academy of Medicine, Singapore (2005)

Professional Appointments and Committee Memberships

  • Senior Consultant, Clinician Scientist and Director of Research, Department of Emergency Medicine, Singapore General Hospital
  • Associate Professor, Duke-National University of Singapore Medical School
  • Associate Director, Duke-National University of Singapore Medical School, Health Services and Systems Research
  • Director, Health Services Research and Biostatistics Unit, Division of Research, SGH
  • Director, Unit for Prehospital Emergency Care, MOH
  • Senior Consultant, Ministry of Health, Hospital Services Division
  • Clinical Tutor, Yong Loo Lin School of Medicine, National University of Singapore
  • Honorary Consultant, Bioinformatics/ Biostatistics, Centre for Infectious Diseases Epidemiology and Research (CIDER), Saw Swee Hock School of Public Health, National University of Singapore


  1. 3rd Prize for Oral Presentation, Singapore Cardiac Society Annual Meeting 2013, Singapore
  2. Finalist for “Use of Technology”, 1st Eldercare Innovation Awards 2013, Singapore
  3. Winning entry for Operations category (Poster), Singapore Healthcare Management 2013, Singapore
  4. Listed in Dictionary of International Biography – 27th Edition 2013, International Biographical Centre, Cambridge, England
  5. Soo Khee Chee Publication Award 2013m SingHealth Foundation, Singapore
  6. Role Model Award for graduating class of 2012, Yong Loo Lin School of Medicine, National University of Singapore
  7. 2nd Prize for Poster Session, Asian EMD Council/Pan-Asian Resuscitation Outcomes Study/Pan-Asian Trauma Outcomes Study CRN 2013, Tokyo meeting
  8. Best Oral Presentation: Medical Student (Supervisor), SEMS Annual Scientific Meeting 2014
  9. Best Oral Presentation: Young Investigator (Supervisor), SEMS Annual Scientific Meeting 2014
  10. Best Oral Presentation: Allied Health, SEMS Annual Scientific Meeting 2014

Research Interests

  • ​Emergency Medicine
  • Prehospital Emergency Care
  • Health Services Research
  • Data Science/Artificial Intelligence
  • Medical Devices: Technological development of Heart Rate Variability (HRV)
  • Carbon cool suit for targeted temperature management


  1. Kajino K, Kitamura T, Iwami T, Daya M, Ong ME, Hiraide A, Shimazu T, Kishi M, Yamayoshi S. Current termination of resuscitation (TOR) guidelines predict neurologically favorable outcome in Japan. Resuscitation 2013; 84(1):54-9. IF= 3.601
  2. Ong MEH, Wong ASL, Seet CM, Teo SG, Lim BL, Ong PJL , Lai SM, Ong SH, Lee F, Chan KP, Anantharaman V, Chua TSJ, Pek PP, Li HH. Nationwide Improvement of Door-to-Balloon Times In Patients With Acute ST Elevation Myocardial Infarction Requiring Primary Percutaneous Coronary Intervention Using Pre-hospital 12-Lead ECG Recording and Transmission. Annals of Emergency Medicine 2013; 61(3):339-47. IF= 4.142
  3. Ong MEH, Quah JLJ, Annathurai A, Mohamed Noor N, Koh ZX, Tan KBK, Pothiawala S, Loy CK, Fook-Chong S. Improving the quality of cardiopulmonary resuscitation by training dedicated cardiac arrest teams incorporating a mechanical load-distributing device at the emergency department. Resuscitation 2013; 84:508-514. IF=3.601
  4. McNally B, Ong MEH. Cardiac arrest systems and survival after sudden cardiac arrest. Resuscitation 2013; 84(3):265-6. IF= 3.601.
  5. Ho AFW, Fook-Chong S, Pek PP, Ng YY, Wong ASL, Ong MEH. Prehospital Presentation of Patients with ST-Segment Elevation Myocardial Infarction in Singapore. International Journal of Cardiology 2013; 168(4):4273-6. IF=7.078
  6. Ong MEH, Quah JLJ, Ho AFW, Yap S, Nausheen NE, Ng YY, Goh ES, Leong BSH, Gan HN, Foo DCG. National Population-Based Survey on the Prevalence of First Aid, Cardiopulmonary Resuscitation and Automated External Defibrillator Skills in Singapore. Resuscitation 2013; 84(11):1633-1636. IF= 4.104
  7. Abrams HC, McNally B, Ong M, Moyer PH, Dyer S. A composite model of survival from out-of-hospital cardiac arrest using the Cardiac Arrest Registry to Enhance Survival (CARES). Resuscitation 2013; 84(8):1093-1098. IF=3.601
  8. Sasson C, Meischke H, Abella BS, Berg RA, Bobrow BJ, Chan PS, Root ED, Heisler M, Levy JH, Link M, Masoudi F, Ong M, Sayre MR, Rumsfeld JS, Rea TD. Increasing cardiopulmonary resuscitation provision in communities with low bystander cardiopulmonary resuscitation rates: a science advisory from the American Heart Association for healthcare providers, policymakers, public health departments, and community leaders. Circulation 2013; 127(12):1342-1350. IF= 15.202
  9. Aufderheide TP, Nolan JP, Jacobs I, Belle GV, Bobrow BJ, Marshall J, Finn J, Becker LB, Bottiger B, Cameron P, Drajer S, Jung JJ, Kloeck W, Koster RW, Ma MH, Shin SD, Sopko G, Taira BR, Timerman S, Ong MEH. Global Health and Emergency Care:  A Resuscitation Research Agenda- Part 1. Academic Emergency Medicine 2013; 20(12): 1289-1296. IF=1.86.
  10. Ong MEH, Aufderheide TP, Nichol G, Bobrow BJ, Bossaert L, Cameron P, Finn J, Jacobs I, Koster RW, McNally B, Ng YY, Shin SD, Sopko G, Tanaka H, Iwami T. Global Health and Emergency Care:  A Resuscitation Research Agenda- Part 2. Academic Emergency Medicine 2013; 20(12): 1297-1303. IF=1.86.
  11. Goh ES, Liang BZ, Fook-Chong S, Shahidah N, Soon SS, Yap S, Leong BSH, Gan HN, Foo C, Tham LP, Charles RA, Ong MEH. Effect of Location of Out-of-Hospital Cardiac Arrest on Survival Outcomes. Annals of the Academy of Medicine Singapore 2013; 42(9): 437-444. IF=1.01
  12. Doctor NE, Yap S, Gan HN, Leong BSH, Goh ES, Chia MYC, Tham LP, Ng YY, Lim SH, Ong MEH. Recognition and Treatment of Out-Of-Hospital Cardiac Arrests by Non-Emergency Ambulance Service in Singapore. Annals of the Academy of Medicine Singapore 2013; 42(9): 445-450. IF=1.01
  13. Wee JCP, Nandakumar M, Chan YH, Yeo RSL, Kaur K, Anantharaman V, Yap S, Ong MEH. Effect of using and Audiovisual CPR Feedback Device on Chest Compression Rate and Depth. Annals of the Academy of Medicine Singapore 2014; 43(1): 33-38. IF=1.36
  14. Ong ME, Liu N. Regarding "Heart rate variability in patients with chest pain at the ED". American Journal of Emergency Medicine 2014; 32(3):285. IF=1.54
  15. Lim LKY, Sng LH, Wah W, Chee CBE, Hsu LY, Mak E, Earnest A, Ong MEH, Cutter J, Wang YT. Molecular epidemiology of Mycobacterium tuberculosis complex in Singapore, 2006-2012. Plos One 2013; 8(12): e84487. IF=3.73
  16. Song KJ, Shin SD, Park CB, Kim JY, Kim DK, Kim CH, Young HS, Ong MEH, Bobrow BJ, McNally B.  Dispatcher-Assisted Bystander Cardiopulmonary Resuscitation in a Metropolitan City: a Before- After Population-Based Study Resuscitation. Resuscitation 2014; 85(1):34-41. IF=3.601
  17. Kajino K, Kitamura T, Iwami T, Daya M, Ong MEH, Nishiyama C, Sakai T, Tanigawa-Sugihara K, Hayashida S, Nishiuchi T, Hayashi Y, Hiraide A, Shimazu T. Impact of the number of on-scene emergency lifesaving technicians and outcomes from out-of-hospital cardiac arrest in Osaka City. Resuscitation 2014; 85(1): 59-64. IF=3.601
  18. Lam SWS, Zhang ZC, Oh HC, Ng YY, Ong MEH. Reducing ambulance response times using discrete event simulation. Prehospital Emergency Care 2014; 18(2): 207-216. IF= 1.86
  19. Quah JLJ, Yap S, Cheah SO, Ng YY, Goh ES, Doctor N, Leong BSH, Tiah L, Chia MYC, Ong MEH. Knowledge of Signs and Symptoms of Heart Attack and Stroke among Singapore Residents. BioMed Research International; 2014: 1-8. IF= 2.88
  20. Ng M, Wong ASL, Chew HC, Shahidah N, Pek PP, Poh J, Chin CT, Chua TSJ, Ong MEH. Pilot prospective study of therapeutic hypothermia for treatment of post-cardiac arrest patients. International Journal of Cardiology 2014; 173(3):612-613. IF=5.509

Research Trials