Clinical expertise

Mr Jullien Gaer is an experienced cardiac surgeon who treats conditions such as aortic diseasevalvular heart disease and coronary heart disease:

He is also an accomplished exponent of coronary artery bypass surgery including total arterial revascularisation.

He has worked extensively in the Middle East, China and south-east Asia.


Mr Jullien Gaer is a consultant cardiac surgeon at Royal Brompton and Harefield hospitals, where he treats private and NHS patients.

He graduated from the University of London in 1983 and completed his postgraduate training at some of Europe’s leading centres of cardiac surgery, including:

  • Royal Brompton and Harefield hospitals
  • Royal Postgraduate Medical School (now part of Imperial College London)
  • Broussais Hospital, Paris

He became a fellow of the Royal College of Surgeons in 1986 and was awarded his Master of Surgery (University of London) in 1996.

Mr Gaer was previously a consultant at St George’s Hospital in London and the Austin Hospital in Melbourne, Australia, before moving to Harefield Hospital. He sees and operates on patients at both Harefield Hospital and Royal Brompton Hospital, and he also sees private patients at Wimpole Street Consulting Rooms and Diagnostic Centre.


Mr Jullien Gaer has published extensively on aortic surgery.


Mr Jullien Gaer is regularly invited to share his knowledge by speaking at international meetings. He is a member of the faculty of examiners of the Royal College of Surgeons of Edinburgh.

He is an honorary professor of surgery to the Chinese People’s Liberation Army (the armed forces of China).