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Dr G. Sunthar KanaganayagamConsultant Cardiologist and Honorary Senior Lecturer in West London
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Dr G. Sunthar Kanaganayagam

Consultant Cardiologist and Honorary Senior Lecturer in West London and Central London

FRCP FRCP(Edin) PhD MBBS BSc
GMC: 6159439

5.04reviewsReview

Expert in:
Chest pain
Shortness of breath
Palpitations
Bicuspid aortic valve
Heart failure
Hypertension (high blood pressure)
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Professional statement

Dr G. Sunthar Kanaganayagam is a well-respected consultant cardiologist based in London, specialising in the diagnosis of chest pain, breathlessness, palpitations and the treatment of coronary disease, valve disease, heart failure, and hypertension. He has extensive expertise in cardiac imaging, including CT coronary angiography, cardiac MRI, and transoesophageal echocardiography.


Dr Kanaganayagam sees private patients at Chiswick Outpatients, The Harley Street Clinic, Welbeck and Syon Clinic. With over 15 years of experience, he also leads the cardiology imaging department at Chelsea and Westminster Hospital NHS Foundation Trust. He has had senior management roles at Imperial College Healthcare NHS Trust, where he served as a divisional director of governance and was on the executive management board. He also pioneered a community heart failure service working closely with local GPs to serve patients.


Dr Kanaganayagam holds a PhD from St Thomas’ Hospital and an MBBS from King’s College London, as well as an intercalated BSc in Pharmacology. He trained at Guy’s and St Thomas’ NHS Foundation Trust before completing his specialist cardiology training at Imperial College Healthcare and Royal Brompton and Harefield NHS Foundation Trust.


In addition to his clinical work, Dr Kanaganayagam is an honorary senior lecturer in cardiology at Imperial College London. He has published research in leading medical journals and contributes significantly in multidisciplinary teams in the management of both common and rare heart conditions.

Clinics

Syon Clinic - part of Circle Health Group
  • Syon Clinic - part of Circle Health Group profile image

    Syon Clinic - part of Circle Health Group

    West London, 941 Great West Road, Brentford , TW8 9DU

    Medical insurances accepted

    I'm paying for myself
    Bupa
    AXA
    AVIVA
    Cigna
    WPA
    Vitality

Credentials

Professional experience

  • 19 years of experience
  • Consultant Cardiologist, Chiswick Outpatients (present)
  • Consultant Cardiologist, Welbeck (present)
  • Consultant Cardiologist, The Harley Street Clinic (present)
  • Consultant Cardiologist, Syon Clinic (present)
  • Consultant Cardiologist, Imperial College Healthcare NHS Trust (present)
  • Consultant Cardiologist, Chelsea and Westminster Hospital NHS Foundation Trust (present)
View more

Professional memberships

  • British Society of Echocardiography
  • European Society of Cardiology
  • British Society of Cardiovascular Imaging
  • British Cardiac Society
  • British Heart Valve Society
View more

Education

  • FRCP, Royal College of Physicians
  • FRCP (Edin), Royal College of Physicians, Edinburgh (2010)
  • PhD, St Thomas’ Hospital (2007)
  • ​MBBS, King’s College London (2007)
  • BSc in Pharmacology, King’s College London (2002)
View more

Teaching posts

  • Honorary Senior Lecturer in Cardiology, Imperial College London (present)

Positions in organisations

  • Lead for Cardiology Imaging, Chelsea and Westminster Hospital NHS Foundation Trust (present)
  • Divisional Director of Clinical Governance for Surgery, Imperial College Healthcare NHS Trust (past)

Publications and conferences

  • Dr Kanaganayagam's publications are available on his PubMed profile
  • Dr Kanaganayagam's publications are available on ResearchGate

Languages spoken

  • English
Registration number: 6159439

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

4 reviews

5.0

Review this doctor
  • Would you recommend this doctor?
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  • Dr Sunthar Kanaganayagam is A++++ across the board. I left my consultation appointment feeling at ease with any questions I’d gone in with answered and confident that I am in the absolute best care moving forward.
    21 October 2025

    C.K.

    Verified patient
  • Although I arrived a few minutes late - (traffic) Dr Kanaganayagam was his usual charming self. He was very thorough in his follow up to my hospital admission for 4 days in July. He offered me advice for the next consultation in 6 months and discussed the new medications.
    16 October 2025

    J.W.

    Verified patient
  • I am very happy for the care and concern that I have received from the Doctor, He is kind and very humble person. I am happy for all the information he had explained me.
    26 May 2025

    J.D.

    Verified patient
  • Dr Gajen was very helpful, knowledgeable, approachable throughout the consultation. We were able to ask him all our questions, share all the date we brought. We felt listened to and heard. He explained his interpretation of the situation and the options we have.
    4 May 2025

    D.S.

    Verified patient
View all reviews

Treatments

The doctor is expert in

Bicuspid aortic valve

Chest pain

Heart failure

Hypertension (high blood pressure)

Palpitations

Shortness of breath

The doctor also specialises in:

Ambulatory ECG monitoring

Ambulatory blood pressure monitoring

Angina

Anxiety

Aortic stenosis

Aortopathy

Arrhythmia

Atherosclerosis

Atrial Fibrillation

Atrial septal defect

Frequently Asked Questions

What is Dr G. Sunthar Kanaganayagam's specialty?

Dr G. Sunthar Kanaganayagam is a consultant specialising in Cardiology, with extensive experience in assessing and treating patients within this field.

Which conditions and treatments does Dr G. Sunthar Kanaganayagam specialise in?

Dr G. Sunthar Kanaganayagam is a cardiologist who provides assessment and treatment for Hypertension (high blood pressure), Heart failure, Palpitations, Chest pain, Bicuspid aortic valve and Shortness of breath. During your consultation, you will be informed of the most suitable options following a personalised evaluation.

How many years of experience does Dr G. Sunthar Kanaganayagam have?

Dr G. Sunthar Kanaganayagam has 19 years of professional experience as a consultant cardiologist, providing specialist assessment and treatment in this medical field.

What do patients say about Dr G. Sunthar Kanaganayagam?

Patients give a rating of 5.0 out of 5 to Dr G. Sunthar Kanaganayagam, a score considered excellent. This average is based on 4 verified patient reviews, reflecting the experience of those who have attended an appointment.

Are Dr G. Sunthar Kanaganayagam's reviews verified?

Yes. All Dr G. Sunthar Kanaganayagam'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 G. Sunthar Kanaganayagam practise?

Dr G. Sunthar Kanaganayagam practices in the following locations:

  • West London at 941 Great West Road, Brentford
  • West London at 347-353 Chiswick High Road
  • Central London at 88 Harley Street
  • Central London at 1 Welbeck St, London W1G 0AR, UK

In-person consultations are available at these locations as a Cardiology.

How can I book an appointment with Dr G. Sunthar Kanaganayagam?

You can book an appointment with Dr G. Sunthar Kanaganayagam 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 G. Sunthar Kanaganayagam see NHS patients?

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

Does Dr G. Sunthar Kanaganayagam offer private appointments?

Yes, Dr G. Sunthar Kanaganayagam offers private appointments for patients seeking flexible and direct access to a consultant cardiologist.

Does Dr G. Sunthar Kanaganayagam offer online consultations?

At the moment, Dr G. Sunthar Kanaganayagam does not offer online consultations. You can book an in-person appointment from this page or call +44 02071732194. When calling, please mention that you are a Top Doctors patient.

Does Dr G. Sunthar Kanaganayagam accept insurance?

Dr G. Sunthar Kanaganayagam works with the following private medical insurance providers: Bupa, AXA, AVIVA, Cigna, WPA and Vitality. If your insurer is not listed, you may contact the practice directly to confirm your coverage.

What is Dr G. Sunthar Kanaganayagam's availability?

Dr G. Sunthar Kanaganayagam'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 G. Sunthar Kanaganayagam offer?

You can pay for your consultation with Dr G. Sunthar Kanaganayagam using the following methods: Self-paying.

What languages does Dr G. Sunthar Kanaganayagam speak?

Dr G. Sunthar Kanaganayagam is a cardiologist who offers consultations in English.

How is Dr G. Sunthar Kanaganayagam selected to appear on this platform?

All doctors listed on Top Doctors, including Dr G. Sunthar Kanaganayagam, 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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Syon Clinic - part of Circle Health GroupWest London, 941 Great West Road, Brentford , TW8 9DU
Payment methodSelf-paying
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