Professor Mark MasonMBBS FRCP

Consultant cardiologist; Director of the heart division at Harefield Hospital


Professor Mark Mason is a consultant cardiologist who treats private patients at Harefield Hospital and 77 Wimpole Street.

He qualified in medicine at Charing Cross and Westminster Medical School (now part of Imperial College London), then went on to complete cardiology training with the London Deanery.

He has been a consultant cardiologist since 2001. Alongside his role, he is director of the heart division at Harefield Hospital.

Clinical expertise

Professor Mark Mason is an expert in coronary intervention. He is nationally recognised as a specialist in pacing lead extraction and has been a specialist adviser to the National Institute for Health and Care Excellence (NICE) on the use of laser sheaths in pacing lead extraction.

He has extensive experience in managing patients with heart conditions such as:

  • coronary artery disease
  • mitral valve disease
  • heart failure.

He is an expert in a number of cardiac treatments and procedures:

  • cardiac resynchronisation therapy (also called ‘biventricular pacing’)
  • implanting pacemakers
  • implantable cardioverter defibrillator (ICD)
  • pacemaker and ICD extraction, including the use of laser lead extraction.

In addition, he has a keen interest in sports cardiology, including screening for the risks associated with participation in endurance sport, particularly in older athletes.

Research interests

Professor Mark Mason is interested in monitoring patients with chronic heart failure through the use of technology such as the CardioMEMS implantable pulmonary artery pressure monitor.


Professor Mark Mason regularly lectures and chairs at meetings both in the UK and internationally. He has a keen interest in teaching, and in particular in developing the use of simulation-based training.

In 2018, Professor Mark Mason was appointed as Visiting Clinical Professor of Brunel University, London.


Fellow, Royal College of Physicians

British Cardiovascular Intervention Society (BCIS)


Harefield Hospital, Wimpole Street

Case Studies

A dream trip to Paris takes an unexpected turn for US heart patient

Mr and Mrs Ritchie from the US were passing through Heathrow airport to catch a plane for their dream trip to Paris when Mr Ritchie had a heart attack...