Patient Care
Find a Doctor

Doctor Details

Doctor Detail

Adj Prof Malcolm Mahadevan

Photo of Adj Prof Malcolm Mahadevan


  • Senior Consultant, Emergency Medicine Department, National University Hospital
  • Adjunct Professor, Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore
  • Group Chief, Emergency Medicine, National University Health System
  • Designated Institutional Official, National University Health System (NUHS) Residency Programme
  • Medical Director of the Community Care Facilities(CCF) appointted by MOH
  • Member of the Specialists Accreditation Board by MOH
  • Member of the Training and Assessment Standards Committee (TASC) by MOH


MBBS (SINGAPORE), FRCP (Edin), FRCSEd (A&E), MHPE (Maastricht), FAMS


Emergency Medicine

Special Interests:

Respiratory Medicine, Infectious Diseases, Observational Medicine

Find Out More:


Adjunct Professor Malcolm Mahadevan graduated from the National University of Singapore in 1991 and obtained his Fellowship Royal College of Surgeons Edinburgh in 1995 and is a fellow at the Royal College of Physicians Edinburgh. He is Group Chief, Emergency Medicine, Designated Institutional Official (DIO) at National University Health System and a Senior Consultant in the Emergency Medicine Department, National University Hospital, Singapore. He has been with NUH since 1996 and was the Head, Emergency Medicine from 2010 till March 2020.  Under his exemplary leadership, the department grew from strength to strength and scaled new heights in patient care, education and research.

He has authored the chapter Observation Medicine in Rosen’s Emergency Medicine Textbook and has published substantial papers in his areas of interest which include critical care of the septic patient and early goal directed therapy, respiratory disease in the EMD including asthma, COPD and pneumonia.  Other interest areas include clinical indices in the EMD and improving clinical quality as well as interactive bedside teaching. 

He was awarded two MOH Human Manpower Development scholarships - the first in 1995 to UK (Edinburgh Royal Infirmary and St James University Hospital) and in 1999 to the US as the first International Fellow in Observation Medicine (University of Hartford Medical School & Yale University). In 2015 he was awarded the Singapore Healthcare Humanity Awards as well as the Team National Medical Excellence Awards twice, once in year 2010 and also in year 2014. In year 2020 he was awarded the National Day Award for Public Administration Medal Bronze and serve as an abiding inspiration to the Community to constantly strive for excellence. He has successfully completed the Master of Health Professions Education (MHPE).

He has held multiple appointments at NUS Yong Loo Lin School of Medicine covering admissions, curriculum, electives and faculty assessment. He has been a Core Faculty and is a member of the Clinical Competency Committee (CCC). At the national level, he is member of the Residency Advisory Committee (RAC for Emergency Medicine) appointed by MOH and is a Faculty of Medical Expert (FME) by AMS (Academy Medicine of Singapore). He is the lead person in establishing Observation Medicine in Singapore since 2000 with a citation by PS Health. He is responsible for the setting up of the first Observation Unit (Extended Diagnostic and Treatment Unit or EDTU) in Singapore in 2004. Adj Prof Mahadevan also played a key role in NUHS’s fight against COVID-19.  He started off volunteering at Sungei Tengah Lodge caring for Singapore's migrant friends and set up three community care facilities (CCF), for which he was the overall medical lead.


  • 2020 – National Day Award for Public Administration Medal Bronze and served as an abiding inspiration to the Community to constantly strive for excellence
  • 2019 – NUH Quality Improvement Project Merit Award (Streamline EMD Triage Process RIE).
  • 2018 – NUH Quality Improvement Project Recognition Awards (Improving The 1st ECG Performed Time for Patients Presenting with Chest Pain from P3 Walk-In Cases) & (Auto Trigger Admission for Adult Patients in EDTU).
  • 2017 – NUH Outstanding Collaborating Physician Award 2017
  • 2017 – NUH Quality Improvement Project Recognition Awards (Creating an Elderly Friendly Emergency Department through Introducing Geriatric Emergency Medicine (GEM) Nursing Service (Sustenance)
  • 2016 – NUH Quality Improvement Project Awards (Decreasing contamination rate of blood culture in EM within 6mths to less than 3%)
  • 2015 – NUH Quality Improvement Project Merit Awards (To decrease time from point of triage to first nebulisation in adult Asthmatic patients presenting to EMD from an average of 40 minutes to 10minutes (Sustenance))
  • 2015 – Healthcare Humanity Award
  • 2014 – NUH Quality Improvement Project Awards (Streamline the workflow for Chest Pain Patients in EMD and to provide Timelier Assessment RIE)
  • 2014 – National Medical Excellence Award-National Clinical Experience Team Award (NUHS).
  • 2010 – Asian Hospital Management Most Outstanding Award - "Applying Lean Concepts in ED"
  • 2010 – National Medical Excellence Team Award for NIV use in ED
  • 2009 – 2010 – Gold Award Winner Reviewer Annals of Medicine Singapore
  • 2009 – Asian Hospital Management Most Outstanding Award for Cardiac Rapid Experiment Project
  • 2009 – Site PI for Asia neTwork to reguLAte Sepsis care (ATLAS) Investigators for the implementation of early goal-directed therapy (EGDT)
  • 2008 – Citation, Permanent Secretary, NHG HMDP Award Ceremony
  • 2008 – ASEAN Trial Regulate Sepsis (ATLAS) multi centre principal investigator for implementation of Early Goal Directed Therapy (EGDT)
  • 2008 – Excellent Service Award (EXSA) Gold Award Winner
  • 2006 – First Prize Winner Singapore Quality Poster Competition COPD Outcome 2000 – 2005
  • 2005 – QIF Grant collaborator NUH $174,500 HOME project
  • 2003 – Awarded National Healthcare Group S$92k Grant for Study On D-Dimer and Hs-CRP as Early Risk Stratification Tools in The Evaluation of ED Patients with Chest Pain
  • 1999-2000 – First International Fellow in Observational Medicine, University of Connecticut Medical School
  • 1999-2000 – Human Manpower Development Program (HMDP) Training in United State for Observation Medicine
  • 1998 – Awarded National Medical Research Grant for The Sum of S$5k for The Clinical Trial of Opiates in Appendicitis
  • 1995-1995 – Human Manpower Development Programmed (HMDP) Training in United Kingdom

Journals & Publications

  1. Ibrahim I, Chor WP, Chue KM et al. Is Arterial Base Deficit Still a Useful Prognostic Marker in Trauma? A Systematic Review. Am J Emerg Med. 2016 Mar;34(3):626-35. (IF 2020 2.469)
  2. Chor WPD, Yong PXL, Lim LL et al. Management of dyspepsia – The role of the ED Observation unit to optimize patient outcomes. Am J Emerng Med. 2018 Oct;36(10):1733-1737. (IF 2020 2.469)
  3. Chor WPD, Wong SYP, Ikbal MFBM et al. Initiating End-Of-Life Care at the Emergency Department: An Observational Study. Am J Hosp Palliat Care. 2019 Nov;36(11):941-946. (IF 2020 2.500)
  4. Paliwal PR, Tan BYQ, Leow AST, Sibi S, Chor DWP et al. Impact of the COVID-19 pandemic on hyperacute stroke treatment: experience from a comprehensive stroke centre in Singapore. J Thromb Thrombolysis. 2020 Oct;50(3):596-603. (IF 2020 2.300)
  5. Chor WPD, Ng WM, Cheng L et al. Burnout amongst emergency healthcare workers during the COVID-19 pandemic: a multi-center study. Am J Emerg Med. 2020 Oct 24:S073506757(20)30936-0. (IF 2020 2.469)
  6. Ko SQ, Hooi BMY, Koo CY, Chor DWP et al. Remote monitoring of marginalized populations affected by COVID-19: a retrospective review. BMJ Open. 2020 Dec 31;10(12):e042647. (IF 2020 2.692)
  7. Chew NW, Sia CH, Wee HL, Benedict LJ, Rastogi S, Kojodjojo P, Chor WPD et al. Impact of the COVID-19 Pandemic on Door-to-Balloon Time for Primary Percutaneous Coronary Intervention – Results From the Singapore Western STEMI Network. Circ J 2021 Jan 25;85(2):139-149. (IF 2020 2.993)
  8. Phua K, Chew NWS, Sim V, Zhang AA, Rastogi S, Kojodjojo P, Chor WD et al. One-year outcomes of patients with ST-segment elevation myocardial infarction during the COVID-19 pandemic. J Thromb Thrombolysis. 2021 Aug26:1-11. (IF 2020 2.300)
  9. Cheng L, Ng WM, Lin Z, Law LSC, Yong L, Liew YST, Yeoh CK, Mathews I, Chor WPD, Kuan WS. Factors reducing inappropriate attendances to emergency departments before and during the COVID-19 pandemic: A multicentre study. Ann Acad Med Singap. 2021 Nov;50(11):818-826. (IF 2021 2.473)

1E Kent Ridge Road, NUHS Tower Block, Singapore 119228
Last updated on
Best viewed with Chrome 79.0, Edge 112.0, Firefox 61.0, Safari 11
National University Health System
  • National University Hospital
  • Ng Teng Fong General Hospital
  • Alexandra Hospital
  • Jurong Community Hospital
  • National University Polyclinics
  • Jurong Medical Centre
  • National University Cancer Institute, Singapore
  • National University Heart Centre, Singapore
  • National University Centre for Oral Health, Singapore
  • NUHS Diagnostics
  • NUHS Pharmacy
  • Yong Loo Lin School of Medicine
  • Faculty of Dentistry
  • Saw Swee Hock School of Public Health
Back to Top