Mark O'Neill

Consultant cardiologist and professor of cardiac electrophysiology
Biography
Mark O'Neill has been a consultant cardiologist at Guy's and St Thomas' NHS Foundation Trust since 2009. He leads the clinical research group in cardiac electrophysiology.
Before this he was a senior Lecturer and honorary consultant cardiologist at Imperial College Healthcare NHS Trust.
He is a council member of Heart Rhythm UK.
He is a training lead in the London Deanery and supervises PhD students at King's College London.
He is regularly invited to major international arrhythmia meetings and is widely published.
Education and training
- Fellowship of the Royal College of Physicians, 2012
- Fellowship of the Heart Rhythm Society, 2011
- Certificate of completion of specialist training in cardiology, 2007
- Membership of Royal College of Physicians, 2001
- Medicine and surgery (MB BCh), First-Class Honours, University College Dublin, 1998
- DPhil in physiological sciences, Rhodes Scholar, University of Oxford, 1995
Specialist Registrar
- Academic Clinical Lecturer in Cardiology, Imperial College Healthcare NHS Trust, 2007 to 2008
- British Heart Foundation International Fellowship, Hôpital Cardiologique du Haut Lévêque, Bordeaux, 2005 to 2007
- Specialist registrar in cardiology, Imperial College Healthcare NHS Trust, 2003 to 2005
- Specialist registrar in cardiology, Central Middlesex Hospital, 2002 to 2003
- Specialist registrar in cardiology, Hillingdon Hospital, London, 2001 to 2002
Senior House Officer
- Whittington Hospital, 2000 to 200
- Royal Brompton Hospital and Hammersmith Hospital, 1999 to 2000
House Officer
- Intern to the Medical and Surgical Professorial Units, Mater Hospital, Dublin, 1998 to 1999
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
Awards
- Ruben Harvey prize for highest aggregate mark in medicine, surgery and obstetrics in Dublin Medical Schools, Royal College of Physicians of Ireland, 1998
- Mater Hospital gold medal in medicine, 1998
- Surgeon Hugh Kennedy Boyle bequest for best performance in surgical finals, 1998
- Rhodes Scholarship, University of Oxford
- Colman Saunders medal in paediatrics
- Kirwan medal and prize
- Dwyer Joyce Prize in ophthalmology
- Dr Henry Hutchinson Stewart prize in physiology 1992
- Dr Henry Hutchinson Stewart prize in pharmacology, 1992
- Dillon memorial prize in pharmacology, 1992
- Research scholarship, Health Research Board 1992
- Dr Henry Hutchinson Stewart prize in biochemistry, 1991
- Ambrose Birmingham medal in anatomy, 1991
Contact
Email: [email protected]
Phone: 020 7188 7313
Specialist interests
- Complex heart rhythm disturbances of atrial and ventricular origin
- Atrial fibrillation and tachycardia in inherited and acquired structural heart disease
- Catheter ablation of atrial fibrillation
- Arrhythmia in adult congenital heart disease
- General cardiology
- Magnetic resonance imaging of arrhythmia substrate
Last updated: January 2023