About Sydney Heart Health Clinic
Sydney Heart Health is a trusted provider of non-invasive cardiology services located on Sydney’s Upper North Shore. Our team includes seven highly experienced cardiologists, led by senior cardiologist and principal, Dr. Ross Walker.

Our Mission
At SHHC, we believe the best management of all forms of cardiovascular disease is not to develop it in the first place i.e. prevention. It is our opinion that over 90% of cardiovascular disease is preventable
With early detection and management, in most cases, the condition can be stabilised or even reversed.
SHHC adopts the 80:10:10 rule which involves an 80% focus on lifestyle through the five keys to good health; a 10% focus on the appropriate use of orthodox medical therapies, both pharmaceutical & procedures & 10% being the use of evidence-based supplementation.
All of our cardiologists offer state of the art therapies combined with a caring, compassionate approach allowing our patients the best possible outcomes regardless of the underlying diagnosis.
Join us at Sydney Heart Health Clinic and take the first step towards a healthier heart. Schedule your appointment today and let us help you prevent cardiovascular disease and achieve optimal heart health.
Our Services
We offer comprehensive services in diagnostic cardiology, including:
- Stress Echocardiography
- Echocardiography
- Electrocardiogram
- Arterial Screening
- Holter Monitoring
- Heart Bug
- Blood Pressure Monitoring
For added convenience, a radiology service within the clinic precinct provides advanced imaging options, including coronary calcium scoring and intravenous CT coronary angiography.

A Preventative Approach
Our clinic places a strong focus on preventative cardiology to help patients manage their heart health proactively.
Dr. Walker and his team offer a full preventative screening service, which includes consultations, genetic testing, detailed blood tests, and the new state-of-the-art PULS score to assess cardiovascular risk.
Our Doctors

Dr Ross Walker
MBBS (Hons) FRACP FCSANZ

Dr Nhung Nguyen Nguyen
MBBS (UNSW) FRACP FCSANZ

Dr Young Yu
MBBS (Hons) BSc Med FRACP PhD

Dr Aiden O’Loughlin
MBBS, BSc(Med)(Hons), MBiostat, PhD, FRACP, FCSANZ

Dr Cathy Smilie

Prof. Chris Semsarian
MBBS PhD MPH FAHMS FRACP FRCPA FCSANZ FESC FAHA FHRS

Dr Liam Back
BMed (Distinction), MSc (Clinical Trials), FRACP (Cardiology)