
Dr Oliver Segal
Professional statement
Dr Oliver Segal is one of London’s leading cardiologists and electrophysiologists. Based in the NHS at Barts Heart Centre and UCLH, where he is arrhythmia lead, he sees patients privately at The Harley Street Clinic. He has over 20 years’ experience in the management of all arrhythmias, performing catheter ablation for atrial fibrillation and other rhythms, as well as implanting pacemakers, defibrillators and other cardiac devices.
Dr Segal is an expert in electrophysiology, focusing on the analysis of irregular heart rhythms. He focuses on seeing patients with rapid palpitations and tachycardias, irregular heartbeats, ectopic or ‘skipped’ beats, pauses and slow heartbeats, dizzy spells and blackouts, including patients with breathlessness and tiredness due to atrial fibrillation (AF). He has performed >2,000 ablations (including the use of three-dimensional and non-contact mapping systems) and >1,500 device implantation procedures. He implants left atrial appendage occlusion (LAAO) devices (the Amulet devices) for patients with AF and high risk of stroke who cannot take anticoagulants or when anticoagulants have failed, leadless pacemakers and conduction system pacemakers.
Dr Segal was awarded an MB BS degree from King's College London in 1995, and later obtained his Doctorate (MD) from the National Heart & Lung Institute, Imperial College London in 2008. Dr Segal's training took him to prestigious institutions, including St Mary’s, The Heart & and St George's Hospitals in London, where he honed his skills in electrophysiology, before earning a coveted fellowship in electrophysiology and devices, with the world-renowned Professor George Klein in Canada.
Dr Segal's professional involvement extends beyond his practice, as he holds key positions within esteemed organisations. He is a member of the Royal College of Physicians and plays a pivotal role as a lead for electrophysiology and arrhythmias at University College London Hospitals. Furthermore, he contributes as a valued member of the European Heart Rhythm Association Exam Setting Committee, the British Heart Rhythm Society, and the Heart Rhythm Society in the USA.
Dr Segal also offers a face to face clinic every Friday morning from 9am, please call to enquire.
Clinics

The Physicians' Clinic
Central London, 14 Devonshire St, London W1G 7AE,Medical insurances accepted
Credentials
Professional experience
- 31 years of experience
- Consultant Cardiologist & Electrophysiologist, The Harley Street Clinic (present)
Subspecialties
- Atrial flutter
- Palpitations
Professional memberships
- Royal College of Physicians, London
- British Heart Rhythm Society (BHRS)
Education
- MB BS, King’s College London (1995)
- MD, University of London (2008)
Positions in organisations
- Lead for Electrophysiology & Arrhythmias at University College London Hospitals
- Member of the European Heart Rhythm Association Exam Setting Committee
Prizes and awards
- Young Investigator's Award, The Heart Rhythm Society
Languages spoken
- English
Reviews
- Would you recommend this doctor?
- Treatment of the doctor
- Treatment of the staff
- Waiting time
- Condition of facilities
- I would not hesitate to recommend Dr. Segal to others based on my experience. He has proven to be a caring, collaborative, and deeply knowledgeable health professional who is an attentive listener who dispensed appropriate, relevant, and effective advice that accelerated my personal road to recovery, even going so far as to hold a phone consultation with me during his vacation. You're in very safe hands with Dr. Segal, I could not recommend him highly enough.
- I have found Dr Segal to be an outstanding cardiologist/electrophysiologist and I’m very fortunate to be in his care. He completely replaced a pacemaker implanted poorly by another doctor and I have been feeling great in the six months since the revision.
- Dr Segal was outstanding. Explaining the situation in plain English, the likely reason why the issue came about, how to mitigate or reduce the risk in the future and via quick op resolving the heart issue. Dr Segal was recommended to me and I would fully recommend to others.
- I cannot recommend Dr Segal highly enough. I consulted him about a heart flutter. He is a lovely man, humane, approachable, explains clearly and gives clear advice on treatment and management. He has cutting edge knowledge and access to the latest technology for management.
- Super efficient and seamless - booking super easy, seen to quickly and friendly atmosphere
- I believe Dr Segal to be authoritative, exceptionally focused, and direct and straightforward in explanation. His comprehensive inter-disciplinary approach in diagnosis was impressive, and he resolved the issue in my case, which a year of hospital appointments had not.
- Very good professional and friendly service from Dr Segal and his secretary. Full explanation of recommended treatment and procedures.