Dr Gunaruwan graduated from the University of Tasmania in 1996, expanding his training into the UK where he completed a PHD in cardiovascular research in 2006. He moved to John Hunter Hospital in Newcastle NSW to complete the cardiology training and joined Gold Coast University Hospital in 2014 and continues to be affiliated with Gold Coast Public Health Services. He also is a fellow of the Royal Australian College of Physicians and a fellow of the Cardiac Society of Australia and New Zealand.

Dr Gunaruwan has been with Biggera Waters Family Practice since March 2015 providing bulk billed (with a GP referral) consultations and services which include coronary disease management, arrhythmia management, heart failure and inherited heart disease management as well as echocardiography, stress tests and transoesophageal echocardiography and holter monitoring. He is available every Monday afternoon at Biggera Waters Family Practice.