Dr Gajen Sunthar Kanaganayagam
MRCP, PhD, MBBS, BSc
Cardiologist
18 years of experience
London, W1G 8BJ
(+8 more)
26 connections in healthcare
Skill endorsed
by Dr. Syed Hassan, Dr Arjun K Ghosh and 17 others
18 years of experience
London, W1G 8BJ
(+8 more)
26 connections in healthcare
Skill endorsed
by Dr. Syed Hassan, Dr Arjun K Ghosh and 17 others
Latest Patient Review
25 Jul 2025
Latest Skill endorsement
12 Jul 2025
Contact
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About Dr Gajen Sunthar Kanaganayagam
Dr Kanaganayagam is a consultant cardiologist who works at Imperial College NHS Trust and Chelsea and Westminster NHS Trust. He sees patients who have chest pain, shortness of breath, palpitations, dizziness, leg swelling and for cardiac risk management. He manages a broad range of conditions such as coronary artery disease, valve disease, arrhythmias and heart failure, as well as hypertension and high cholesterol.
Dr Kanaganayagam is the head of cardiology imaging at Chelsea and Westminster Hospitals, and is very experienced in CT coronary angiography (with calcium score), stress echocardiography, transoesophageal echocardiography and cardiac MRIs. He regularly performs cardiology imaging for his and other heart specialists' patients to help manage their conditions. He initiated a large Community Heart Failure service at Imperial and continues to care for patients with both reduced and preserved systolic function (HFPEF and HFREF), as well as other complex conditions. His passion for high quality care is reflected in his previous role as one of three Directors of Quality and Safety across Imperial and his position on the Executive Management Board.
Dr Kanaganayagam is involved in cardiovascular research, and he has written a number of review papers and delivered lectures on cardiac CT, echocardiography, and cardiac MRI both in the UK and abroad. He is also an honorary senior lecturer in cardiology at Imperial College.
Areas of expertise
Based on patient reviews & skill endorsements by other professionals
- Chest Pain (66)
- Echocardiogram (63)
- High Blood Pressure (52)
- Others (356)
Subspecialties
- Heart Failure
- Cardiac Imaging
- Heart Muscle Disease/Cardiomyopathy
All conditions and treatments
Registered with
General Medical Council
No. 6159439
Education
University of London
Medicine
Graduated 2007
Qualifications
Education:
- Kings College London - MBBS - 2007
- St Thomas' Hospital - PhD - 2007
- Kings College London - BSc - 2002
Memberships:
- British Society of Echo
- European Society of Cardiology
- British Society of Cardiovascular Imagine
- British Cardiac Society
- Britsh Heart Valve Society
Languages spoken
- English
Consultation fees
- New appointment: £240
- Follow-up appointment: £180
insurers
- Freedom Health Insurance
- The Exeter
- Healix Health Services
- Aetna
- Benenden Health
- Simply Health (Dental)
- Vitality
- Allianz Worldwide Care
- Bupa Fee Assured
- AXA Health
- Bupa
- Aviva Health
- Cigna
- Saga Health Insurance
- WPA
Location
All locations for Dr Gajen Sunthar Kanaganayagam
(3021)
35 Weymouth Street, London, United Kingdom, W1G 8BJ
(433)
941 Great West Road, Brentford, Middlesex, United Kingdom, TW8 9DU
Reviews
5
Very professional & perceptive. Probably found the cause of my shortness of breath.
5
I found Dr Kanaganayagam to be thorough and extremely reassuring. Everything was done promptly and with kindness, and all my many questions were answered.
5
Dr Gajen Sunthar Kanaganayagam Was very knowledgeable about my condition and provided me with information regarding my treatment plan and medication options.
5
Dr Kanaganayagam was extremely knowledgable, reassuring, kind and helpful and went to great lengths to explain everything and all possible outcomes. Having been very nervous of the situation and procedure beforehand, I was totally reassured about the whole process and much more at ease. Myself and my husband felt very secure with my health in his hands. His PA was also very efficient, kind and helpful.
5
Dr Sunthar is an excellent cardiologist,I came away feeling reassured and looked after.
5
I had an appointment with Dr Kanaganayagam. He carefully and clearly explained to me my prognosis. He also answered all the questions I had for him. He is clearly very knowledgeable in his field, which is exactly what one wants.
5
Dr. Kanengangam has been truly exceptional in caring for both my father and now my mother. After my father first met Dr. Kanengangam, it became a life-changing moment for him. The level of care, compassion, and patience he shows—especially with both of my parents now in their late 80s—is remarkable. He takes the time to explain everything clearly, always with kindness and consideration, especially knowing that English is not their first language. His dedication and empathy have made a tremendous difference to our family. We are incredibly grateful.
5
Always happy to see Dr Kanaganayagam as he is warm, professional and very reassuring.
5
Dr Kanaganayagam provides an expert thoroughly professional service. Top expertise in a friendly patient centric way.
5
Endorsements
Have you worked with this specialist?
Dr Kanaganayagam is a well respected cardiologist with a wealth of knowledge and a reputation for providing great service to his patients
12 Jul 2025
Dr. Syed Hassan
Respiratory MedicineDr Kanaganayagam is a well-known expert in all aspects of general cardiology and cardiac imaging. He is active in the related research space and has excellent patient feedback. He is a valued colleague.
30 Sep 2024
Dr Arjun K Ghosh
CardiologyGajen is a very accomplished and knowledgeable Cardiologist and Consultant Colleague. He is very caring to his patients and offers personalised, patient centric high quality care. He is very well liked by his patients and colleagues alike. I highly recommend him.
21 Jul 2024
Mr Raghav Dwivedi
Ear Nose & Throat Surgery (ENT/Otolaryngology)Dr Kanaganayagam is an excellent cardiologist - my patients have really valued his warm and thorough approach. Very happy to have him as a colleague!
11 Jul 2024
Dr. Sam Pannick
GastroenterologyFAQ
What are Dr Gajen Sunthar Kanaganayagam's reviews like?
Dr Gajen Sunthar Kanaganayagam's overall patient rating is 4.97 out of 5 stars on Doctify. This is based on 215 reviews.
What languages does Dr Gajen Sunthar Kanaganayagam speak?
Dr Gajen Sunthar Kanaganayagam speaks English
Where is Dr Gajen Sunthar Kanaganayagam located?
Dr Gajen Sunthar Kanaganayagam primarily practices at The Harley Street Clinic, part of HCA Healthcare UK, located at 35 Weymouth Street, London, United Kingdom, W1G 8BJ
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What are Dr Gajen Sunthar Kanaganayagam working hours?
Dr Gajen Sunthar Kanaganayagam is working Monday (16:30 - 18:30), Tuesday (14:00 - 17:00), Wednesday (18:30 - 20:00, 18:30 - 20:00), Thursday (17:30 - 20:00, 17:30 - 20:00), Friday (15:00 - 18:30, 10:00 - 12:00), Saturday (09:00 - 12:00)
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Does Dr Gajen Sunthar Kanaganayagam accept new patients?
Dr Gajen Sunthar Kanaganayagam generally accepts new patients.
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