Dr Syed Ahsan

Dr Syed Ahsan

Consultant Cardiologist


Specialises in

  • Atrial fibrillation
  • Coronary artery disease and heart failure
  • Pacemakers and defibrillators
  • Palpitations and supraventricular tachycardia ( SVT)
  • POTS and blackouts

Also available for:

Virtual consultations:

I am a Consultant Cardiologist at Barts Heart Centre, St Bartholomew’s Hospital, one of the largest specialist cardiac units in the World. I have expertise in managing patients with a range of cardiac symptoms and conditions and have a special interest in heart rhythm disturbances.

I am an experienced operator and have over 15 years of experience performing catheter ablation procedures, using the latest technologies, for all arrhythmias including atrial fibrillation. I have a special interest in management of refractory or long-standing atrial fibrillation and lead the hybrid AF ablation programme at Barts Heart Centre. I also lead the specialist POTS service at Barts.

I am a specialist in implanting all types of cardiac devices including pacemakers, defibrillators and resynchronization therapy. I also see and treat patients with blackouts, chest pains and high blood pressure.

I graduated from Guy's, King's and St Thomas’ Medical School in 2000 with a First Class Honours Degree in my BSc and undertook my cardiology specialist training at various prestigious hospitals in London where I have worked with world renowned experts. These include the Royal Brompton Hospital, Great Ormond Street Hospital and the Heart Hospital where I undertook my fellowship in cardiac electrophysiology and cardiac devices.

My post graduate medical doctorate was awarded from University College London and evaluated strategies to optimise outcomes in patients with cardiac rhythm devices. My research work was awarded the Royal Society of Medicine National Prize and was presented nationally and internationally in Europe and the USA. I have been a finalist in two national young investigator awards.

I was appointed as a Consultant Cardiologist at the Heart Hospital, University College London Hospital in 2013 and moved to Barts Heart Centre in May 2015 following the merger of the two hospitals. I also established the first ablation service for cardiac rhythm disturbances in North London for the local population.

I pride myself on placing the patient at the heart of my approach. I take the time to make a complete assessment and take particular care to explain all possible treatment options to my patients, taking on board their preferences.


General Medical Council Number: 4743161

Treatment information

Some of the principal treatments carried out by Dr Syed Ahsan at Spire include:


Other treatments

  • Ablation
  • Cardiac devices
  • Coronary angiography
  • Implantable cardioverter defibrillators (bi-ventricular pacemaker)
  • Lead extraction
  • Pacemakers /pacing
  • Radiofrequency ablation

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Important information about Covid-19 tests

COVID-19 testing or antibody tests are not available as a standalone service at Spire St Anthony's Hospital.


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Additional information

Arrhythmia (Electrophysiology)
Atrial fibrillation
Congenital heart disease
Coronary artery disease

Special interest in arrhythmia, electrophysiology, cardiac devices, general cardiology and coronary artery disease.