Mark O’Neill

St Thomas’ Hospital and King’s College London, London, UK

Consultant Cardiologist and Professor of Cardiac Electrophysio, St Thomas’ Hospital and King’s College London, London, UK

Professor Mark O’Neill completed his undergraduate medical and postgraduate scientific training at University College Dublin and the University of Oxford. In 2005, Dr O’Neill undertook a specialist training fellowship in cardiac electrophysiology in Bordeaux with Professors Michel Haissaguerre and Pier Jais, specifically to develop expertise in catheter ablation of atrial fibrillation. Dr O’Neill joined Guy's and St Thomas' in 2009 where he now leads the clinical research group in cardiac electrophysiology.

Research Interests:

  • Comparison of fibrosis determined by MRI and electrical conduction properties.
  • Evaluation and study of ablation lesions using MRI.
  • Use of new catheter technologies for ablation.
  • We believe that an interdisciplinary approach will accelerate progress, ultimately leading to better, safer and more permanent treatments for patients with cardiac arrhythmias.

Telephone: 020 7188 4931
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