MRCP, PhD, MBBS, BSc
Cardiologist
Live bookings available
18 years of experience
London, W1G 8BJ
(+9 more)
34 connections in healthcare
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by Dr Lafina Diamandis, Dr. Syed Hassan and 18 other professionals
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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.
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General Medical Council
No. 6159439
University of London
Medicine
Graduated 2007
Education:
Memberships:
(3133)
35 Weymouth Street, London, United Kingdom, W1G 8BJ
(479)
941 Great West Road, Brentford, Middlesex, United Kingdom, TW8 9DU
(0)
88 Harley Street, London, United Kingdom, W1G 7HR
This summary was created by AI based on recent reviews
Dr Gajen Sunthar Kanaganayagam consistently shows a professional, reassuring, and knowledgeable approach. He explains conditions and treatment plans thoroughly, promptly arranging investigations like echocardiograms and ECGs. Patients feel well looked after and find him understanding, with anxiety often reduced. His expertise is frequently sought for chest pain and high blood pressure, using diagnostic procedures for clear solutions.
Dr Kanaganayagam is very approachable and clear. We felt reassured and in very good hands. He listens well and gave us time to process our concerns. His team are efficient, personable and very easy to work with. We found this to be really important when experiencing symptoms. We would not hesitate to recommend Dr Kanaganyagam.
Dr Gajen Sunthar Kanaganayagam is very patient in listening to patients’ concerns, gives detailed explanations, is highly professional, and offers excellent advice.
1 attended Welbeck Clinic for a Transoesophageal Cardiography completed by Dr Kanaganayagam. The doctor was friendly, helpful and professional and made the whole procedure very straightforward. I would have no hesitation in recommending Dr Kanaganayagam and Welbeck Clinic to other patients. Postoperative care was excellent with good communication and results.
Dt. Kanaganayagam has excellent bed side manner. He listens patiently and provides clear explanation and guidance.
Saw DR Gajen very professional and put my mind at rest
Very friendly, professional, and takes his time to explain everything and answer questions in detail
Dr Kanaganayagam is professional and kind. Highly recommended.
I regularly refer patients to Dr Kanaganayagam and have complete confidence in his care. He is an expert cardiologist with particular strength in advanced cardiac imaging and combines clinical excellence with a kind, holistic approach. Patients consistently feel listened to and genuinely cared for. His attention to detail and expertise ensure thorough, thoughtful assessment and clear management plans.
12 Jan 2026Dr Lafina Diamandis
General PractitionerDr Kanaganayagam is a well respected cardiologist with a wealth of knowledge and a reputation for providing great service to his patients
12 Jul 2025Dr. Syed Hassan
Respiratory DoctorDr 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 2024Professor Arjun K Ghosh
CardiologistGajen 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 2024Mr Raghav Dwivedi
ENT SurgeonWhat 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 236 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 HCA Healthcare UK The Harley Street Clinic, 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 (14:00 - 17:00, 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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