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Dr Oliver SegalConsultant Cardiologist & Electrophysiologist in Central London
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Dr Oliver Segal

Consultant Cardiologist & Electrophysiologist in Central London

MB BS MD FRCP FHRS
GMC: 4209250

4.999reviewsReview

Expert in:
Cardiac (catheter) ablation
Atrial Fibrillation
Supraventricular tachycardia
Pacemaker
Electrophysiology study
Electrocardiogram
Pulsed field ablation (PFA)
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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 Physician's Clinic profile image

    The Physicians' Clinic

    Central London, 14 Devonshire St, London W1G 7AE,

    Medical insurances accepted

    I'm paying for myself

Credentials

Professional experience

  • 31 years of experience
  • Consultant Cardiologist & Electrophysiologist, The Harley Street Clinic (present)
  • Consultant Cardiologist & Electrophysiologist, Nuffield Health at St Bartholomew's Hospital 
  • Consultant Cardiologist & Electrophysiologist, Barts Heart Centre                   
  • Consultant Cardiologist & Electrophysiologist, University College London Hospitals NHS Foundation Trust
View more

Subspecialties

  • Atrial flutter
  • Palpitations
  • Cardiac pacing
  • Cardioversion
  • Hypertrophic cardiomyopathy
  • Cardiac re-synchronisation therapy
  • Postural orthostatic tachycardia syndrome (POTS)
  • Defibrillators (ICDs)
  • Biventricular pacing systems
  • Loop recorders
  • Ectopic or ‘skipped’ heartbeats
  • Remote monitoring
  • Dizzy spells & blackouts
  • Syncope
  • Bradycardia
  • Wolff-Parkinson-White Syndrome
  • Conduction system pacing (CSP)
  • Atrial fibrillation
View more

Professional memberships

  • Royal College of Physicians, London
  • British Heart Rhythm Society (BHRS)     
  • Heart Rhythm Society (HRS), USA
  • European Heart Rhythm Association (EHRA)
View more

Education

  • MB BS, King’s College London (1995)
  • MD, University of London (2008)
  • FRCP, Royal College of Physicians, London (2013)
  • FHRS, Heart Rhythm Society, USA (2013)
View more

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
Registration number: 4209250

Reviews

All reviews are from real patients and have been verified by our Customer Service department to ensure they meet our guidelines. Rules of the service

99 reviews

4.9

Review this doctor
  • Would you recommend this doctor?
  • Treatment of the doctor
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  • 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.
    5 February 2026

    T.F.

    Verified patient
  • 7 January 2026

    B.O.

    Verified patient
  • 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.
    3 December 2025

    D.G.

    Verified patient
  • 26 November 2025

    E.B.

    Verified patient
  • 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.
    10 November 2025

    A.B.

    Verified patient
  • 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.
    14 October 2025

    A.W.

    Verified patient
  • Super efficient and seamless - booking super easy, seen to quickly and friendly atmosphere
    14 October 2025

    S.H.

    Verified patient
  • 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.
    10 October 2025

    D.S.

    Verified patient
  • 7 October 2025

    R.G.

    Verified patient
  • Very good professional and friendly service from Dr Segal and his secretary. Full explanation of recommended treatment and procedures.
    7 October 2025

    A.C.

    Verified patient
View all reviews

Treatments

The doctor is expert in

Atrial Fibrillation

Cardiac (catheter) ablation

Electrocardiogram

Electrophysiology study

Pacemaker

Pulsed field ablation (PFA)

Supraventricular tachycardia

The doctor also specialises in:

Ambulatory blood pressure monitoring

Angina

Atherosclerosis

Atrial fibrillation ablation

Cardiac screening

Cardiomyopathy

Cardiovascular disease

Chest pain

Cholesterol

Coronary heart disease

Frequently Asked Questions

What is Dr Oliver Segal's specialty?

Dr Oliver Segal is a consultant specialising in Cardiology, with extensive experience in assessing and treating patients within this field.

Which conditions and treatments does Dr Oliver Segal specialise in?

Dr Oliver Segal is a cardiologist who provides assessment and treatment for Electrocardiogram, Atrial Fibrillation, Pacemaker, Supraventricular tachycardia, Electrophysiology study, Cardiac (catheter) ablation and Pulsed field ablation (PFA). During your consultation, you will be informed of the most suitable options following a personalised evaluation.

How many years of experience does Dr Oliver Segal have?

Dr Oliver Segal has 31 years of professional experience as a consultant cardiologist, providing specialist assessment and treatment in this medical field.

What do patients say about Dr Oliver Segal?

Patients give a rating of 4.9 out of 5 to Dr Oliver Segal, a score considered excellent. This average is based on 99 verified patient reviews, reflecting the experience of those who have attended an appointment.

Are Dr Oliver Segal's reviews verified?

Yes. All Dr Oliver Segal's reviews come from verified patients who have attended either an in-person or an e-Consultation appointment. We use a system that ensures authenticity and prevents fake reviews. Some profiles may also display reviews from other platforms, which follow their own verification policies, with the source always clearly indicated.

Where does Dr Oliver Segal practise?

Dr Oliver Segal practises in Central London at 14 Devonshire St, London W1G 7AE, offering in-person care and access to services as a cardiologist.

How can I book an appointment with Dr Oliver Segal?

You can book an appointment with Dr Oliver Segal directly from this page by selecting the time that suits you best. Alternatively, you can call the phone number shown if you prefer personalised assistance.

Does Dr Oliver Segal see NHS patients?

Many specialists featured on Top Doctors also hold NHS positions. However, appointments arranged for Dr Oliver Segal through this platform are private, either self-pay or covered by private medical insurance.

Does Dr Oliver Segal offer private appointments?

Yes, Dr Oliver Segal offers private appointments for patients seeking flexible and direct access to a consultant cardiologist.

Does Dr Oliver Segal offer online consultations?

At the moment, Dr Oliver Segal does not offer online consultations. You can book an in-person appointment from this page or call +44 2038840543. When calling, please mention that you are a Top Doctors patient.

Does Dr Oliver Segal accept insurance?

At the moment, Dr Oliver Segal offers consultations on a private, self-pay basis only.

What is Dr Oliver Segal's availability?

Dr Oliver Segal's availability depends on the appointment slots open at any given time. On this page, you can check current availability, and if no slots are shown, you can request an appointment or contact the practice directly.

What payment methods does Dr Oliver Segal offer?

You can pay for your consultation with Dr Oliver Segal using the following methods: Self-paying.

What languages does Dr Oliver Segal speak?

Dr Oliver Segal is a cardiologist who offers consultations in English.

How is Dr Oliver Segal selected to appear on this platform?

All doctors listed on Top Doctors, including Dr Oliver Segal, undergo our rigorous selection process. Only one in five specialists meets the required standards to be included.
Discover Top Doctors' rigorous medical selection process.
The doctor, or where applicable the hospital or medical centre in which the doctor provides services, undertakes to keep the information relating to the prices of services published on their profile on the Top Doctors platform up to date at all times, ensuring that such prices correspond to those effectively charged to patients. In the event of any discrepancy between the published price and the price ultimately charged to the patient, the doctor and/or the relevant hospital or medical centre shall be solely liable towards the patient and towards Top Doctors for any claim or financial difference arising therefrom.

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The Physicians' ClinicCentral London, 14 Devonshire St, London W1G 7AE,
Payment methodSelf-paying
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