Clin Asst Prof Ong Wei Sheng Jonathan

MBBS (Singapore), MMed (Internal Medicine), MRCP (UK), FAMS (Cardiology)

Consultant

National Heart Centre Singapore

Specialty: Cardiology

Make an Appointment

About Doctor

Languages Spoken

Education and Training

Professional Appointments and Committee Memberships

Awards

Publications

Conditions Treated By This Doctor

Abnormal Heart Rhythm/Arrhythmia Atrial Fibrillation Atrial Flutter Bradycardia Brugada Syndrome Cardiac Resynchronization Therapy (CRT) Catheter Ablation Electrophysiological Study (EPS) Implantable Cardioverter Defibrillator (ICD) Lead Extraction Long QT Syndrome Pacemaker Sudden Cardiac Arrest Tachycardia Ventricular Fibrillation Wolff-Parkinson-White (WPW) Syndrome

Clinical Interests

Electrophysiology ＆ Pacing

Clinical Appointments

Consultant

Cardiology

Consultant

NHCS Cardiology @ SKH

Academic Appointments

Clinical Asst Professor

Cardiovascular Sciences Academic Clinical Programme

About Doctor

Clinical Assistant Professor Jonathan Ong is a Consultant from the Department of Cardiology at National Heart Centre Singapore (NHCS).

His clinical interest is in Electrophysiology and Pacing.

Languages Spoken

English
Chinese

Education and Training

Fellow (Chapter of Cardiology), Academy of Medicine Singapore, FAMS, 2023
Specialist Accreditation in Cardiology, 2022
Master of Medicine (Internal Medicine), Yong Loo Lin School of Medicine, National University of Singapore, 2016
Membership of the Royal Colleges of Physicians of the United Kingdom, MRCP (UK), 2016
Bachelor of Medicine & Bachelor of Surgery (MBBS), Yong Loo Lin School of Medicine, National University of Singapore, 2012

Professional Appointments and Committee Memberships

Consultant, Department of Cardiology, National Heart Centre Singapore, November 2025 – Present
Clinical Assistant Professor, Duke-NUS Medical School, July 2026 – Present
Adjunct Lecturer & Clinical Educator, NTU Lee Kong Chian School of Medicine, December 2025 – Present
Clinical Lecturer, NUS Yong Loo Lin School of Medicine, July 2024 – Present
Clinical Physician Faculty Member, SingHealth Cardiology Residency Programme, August 2023 – Present
Member, ACLS Sub-Committee, Singapore Resuscitation and First Aid Council, April 2026 – Present
Member, Heart Safe Committee, Singapore Heart Foundation, July 2026 – Present
Medical Editor, Murmurs, National Heart Centre Singapore, October 2024 – Present

Awards

SingHealth Teaching Award, 2025
SingHealth 10-Year Long Service Award, 2024
NHCS 10-Year Long Service Award, 2024
SingHealth Junior Doctors Achieve Award, 2023
Medical Teaching Recognition Award for Residents, 2021
Best Poster Award, European Society of Cardiology Congress, 2018

Publications

Ong JWS, Middeldorp ME, Zulkifly HH, Moktar N, Lip GYH, Ching CK. Atrial fibrillation in Australia, New Zealand, Malaysia, and Singapore: unmet needs and future priorities. Lancet Regional Health - Western Pacific. 2026;73:101941.
Ong JWS, Leong BS, Chia YW, et al. Singapore Advanced Cardiac Life Support Guidelines 2026. Singapore Med J. 2026;67(7):414-426.
Lim SH, Ng KC, Ong JWS, et al. 2026 Updates to Singapore Resuscitation and First Aid Guidelines. Singapore Med J. 2026;67(7):404-405.
Ong JWS, Tarranza JL, Yue W, Yeo C, Tan VH. It takes two to tango: A unique case of supraventricular tachycardia with dual competing accessory pathways. HeartRhythm Case Reports. 2025;11(11):1140-1145.