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Cardiac Interventional 

Member of
Medical Advisory 

at Cambridge Heart Clinic


Cambridge Heart Clinic

Addenbrooke's Hospital,
Cambridge University Hospitals 
NHS Foundation Trust, 

Cambridge, United Kingdom

About Dr O'Sullivan


Dr O'Sullivan was appointed a Consultant Cardiologist in 2004 and was awarded membership of the Medical Advisory Committee of Cambridge Heart Clinic in 2008.

Following undergraduate training at Cambridge University, Dr O’Sullivan undertook postgraduate training at The Royal Brompton National Heart & Lung Hospital and the Oxford University Teaching Hospitals.


He returned to Cambridge in 1996 to complete higher cardiological training with particular emphasis on interventional cardiology. During this period he was awarded a PhD, and the British Cardiac Society Young Research Worker’s Prize, for research into mechanisms of coronary stent failure. From 2003-2004, he worked in the Department of Interventional Cardiology at University of British Columbia, Vancouver and gained extensive experience in advanced interventional techniques and new strategies for the treatment of coronary disease.

Dr O’Sullivan was appointed Consultant Cardiologist at Royal Papworth Hospital and Addenbrooke’s Hospitals in 2004. In this position he provides secondary and tertiary centre care to patients with general cardiac problems (valve disease, heart failure, heart rhythm problems etc.), in addition to those with coronary disease.

Whilst maintaining a busy clinical practice, Dr O’Sullivan has a major role in medical management, having been appointed Clinical Director of the Addenbrooke’s Cardiology Department in 2006.


He serves as regional specialty advisor for Cardiology to the British Cardiovascular Society and the Royal College of Physicians. In addition, he remains active in the research arena, with interests in the invasive assessment and treatment of coronary disease and the exciting field of percutaneous mitral valve repair.

Specialist clinical interests

Interventional cardiology (angiography, angioplasty, coronary stenting), valvular heart disease (assessment and percutaneous treatment).

Research interests

Novel techniques for invasive treatment of coronary artery disease.
Coronary physiology. Mechanisms of coronary stent failure (in-stent stenosis / restenosis). Intracoronary ultrasound and virtual histology.
Percutaneous mitral valve repair.

Education and training

BA (Class I Hons, Cantab), 1990
MB BChir (Distinctions, Cantab), 1992
MA (Cantab), 1994
MRCP (London), 1996
PhD (Cantab), 2002
FRCP (London), 2009

Current memberships

Fellow of the Royal College of Physicians, London
Member of British Cardiovascular Society
Member of British Cardiovascular Intervention Society
Registered with General Medical Council
Specialist Advisor to National Institute for Health and Clinical Excellence

Declaration of interests

Dr O’Sullivan has declared that he does not hold a share or any financial interest in Cambridge Heart Clinic or any company owned by Regent’s Park Healthcare. This statement conforms with guidance set out by the Competition and Markets Authority.

Areas of Expertise

Coronary Intervention


Artery Stenting

Optical Coherence Tomography

Research & Articles

Consultant Cardiologist

Dr Michael O'Sullivan 

Practice Location

Cambridge Heart Clinic

Addenbrooke's Hospital,
Cambridge University Hospitals 
NHS Foundation Trust, 

Cambridge, United Kingdom

Tel: +44 (0)1223 857474


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