Dr. Ong Kian Chung is a Consultant Respiratory Physician at the Mount Elizabeth Medical Centre, a Clinical Lecturer at the National University of Singapore and a Visiting Consultant to the National Heart Centre and St. Luke’s Hospital. He was previously a Senior Respiratory Consultant at Tan Tock Seng Hospital.

He completed his MBBS at the National University of Singapore (1987), was accepted as a member of the Royal College of Physicians (MRCP) in the United Kingdom (1993) and subsequently completed his specialist training in Respiratory Medicine at the Singapore General Hospital. Dr. Ong was a Fellow in the Department of Respiratory and Critical Care Medicine, Stanford University Medical Center, USA, and was also a visiting clinical and research Fellow in the Stanford Sleep Disorders Clinic and Research Center, USA (1996-97).

Dr. Ong is a Fellow of the Royal College of Physicians (FRCP) of Edinburgh, the American College of Chest Physicians (ACCP), and the Academy of Medicine (AM), Singapore.

Among Dr. Ong's clinical achievements are the establishment of novel treatment modalities such as Pulmonary Rehabilitation, Noninvasive Ventilation and Hospital-at-Home Programs for patients with chronic respiratory disorders in Singapore. His research interests include Sleep-related Breathing Disorders, Pulmonary Function and Exercise Testing, and Disease Management in Chronic Obstructive Pulmonary Disease.
During the world-wide outbreak of the Severe Acute Respiratory Syndrome (SARS) in 2003, Dr. Ong was a member of the SARS Intensive Care Unit Treatment Team at Tan Tock Seng Hospital, which was Singapore’s dedicated SARS hospital at that time. After the outbreak, Dr. Ong received the Courage Star Award presented to healthcare workers for valour and selfless dedication.

Dr. Ong is the principal author of more than 30 publications in national and international peer-reviewed medical journals such as CHEST, European Respiratory Journal and American Journal of Respiratory & Critical Care Medicine, and regularly presents his research findings at major scientific congresses.  He is a reviewer for the journals CHEST, Respirology, Critical Care and the Singapore Medical Journal, and was the past Editor of the Medical Digest. Presently he is also the co-editor-in-chief (Asia Section) of the journal "Update in Respiratory Technology and Applied Technology"

He is the President of the Chronic Obstructive Pulmonary Disease Association (Singapore) and is recognized by the Global Initiative for Chronic Obstructive Lung Disease as the National Leader in Singapore.