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Dr Gajen Sunthar Kanaganayagam

MRCP, PhD, MBBS, BSc

Cardiologist

Live bookings available

18 years of experience

London, W1G 8BJ

(+9 more)

34 connections in healthcare

Skill endorsed

by Dr Lafina Diamandis, Dr. Syed Hassan and 18 other professionals

Areas of expertise

All
Reviews
Endorsements
Chest Pain
65
10
Echocardiogram
61
8
High Blood Pressure
45
8

Contact

Book online

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.


Subspecialties

  • Heart Failure
  • Cardiac Imaging
  • Heart Muscle Disease/Cardiomyopathy

Areas of expertise

All
Reviews
(415)
Endorsements
(181)

Click the bar to read reviews or skill endorsements

Chest Pain
65
10
Echocardiogram
61
8
High Blood Pressure
45
8
ECG (Electrocardiogram)
41
4
CT Coronary Angiogram
20
9

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

4.74

(3133)

35 Weymouth Street, London, United Kingdom, W1G 8BJ

4.86

(1674)

164-178 Cromwell Rd, London, United Kingdom, SW5 0TU

4.79

(837)

25 Harley Street, London, United Kingdom, W1G 9QW

4.82

(687)

9 Harley Street, London, United Kingdom, W1G 9QY

4.86

(632)

Bond House, 347-353 Chiswick High Road, London, United Kingdom, W4 4HS

4.88

(583)

1 Welbeck St, Marylebone, London, London, United Kingdom, W1G 0AR

4.74

(479)

941 Great West Road, Brentford, Middlesex, United Kingdom, TW8 9DU

0

(0)

Bond House Chiswick High Road, London, United Kingdom, W4 4HS

0

(0)

1 Welbeck Street, London, United Kingdom, W1G 0AR

0

(0)

88 Harley Street, London, United Kingdom, W1G 7HR

Reviews

AI Review Summary

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.

5.0
verified patient
01 Feb 2026

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.

5.0
verified patient
22 Jan 2026

Dr Gajen Sunthar Kanaganayagam is very patient in listening to patients’ concerns, gives detailed explanations, is highly professional, and offers excellent advice.

5.0
verified patient
13 Jan 2026

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.

5.0
verified patient
23 Dec 2025

Dt. Kanaganayagam has excellent bed side manner. He listens patiently and provides clear explanation and guidance.

Patient seen for:
5.0
verified patient
16 Dec 2025

Saw DR Gajen very professional and put my mind at rest

5.0
verified patient
02 Dec 2025

Very friendly, professional, and takes his time to explain everything and answer questions in detail

5.0
verified patient
01 Dec 2025

Very good indeed

5.0
verified patient
28 Nov 2025

Dr Kanaganayagam is professional and kind. Highly recommended.

5.0
verified patient
27 Nov 2025

All good. Worked well

Patient seen for:
5.0
verified patient
23 Nov 2025

Dr Kanaganayagam made us feel comfortable and he was brilliant at explaining every last detail. We left feeling confident and knowing that we were in safe hands.

Your trust is our top concern, so providers can't pay to alter or remove reviews.

Endorsements

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 2026
Endorsed for
Cardiovascular Disease
Breathlessness
Tachycardia

Dr Lafina Diamandis

Dr Lafina Diamandis

General Practitioner
I have referred patients to them

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
Endorsed for
24 Hour Blood Pressure Monitor
Heart Muscle Disease/Cardiomyopathy

Dr. Syed Hassan

Dr. Syed Hassan

Respiratory Doctor
I have looked after their patients

Dr 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
Endorsed for
24 Hour Blood Pressure Monitor
Cardiac Imaging

Professor Arjun K Ghosh

Professor Arjun K Ghosh

Cardiologist
Is a colleague

Gajen 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
Endorsed for
Chest Pain
Echocardiogram
High Blood Pressure

Mr Raghav Dwivedi

Mr Raghav Dwivedi

ENT Surgeon
Is a colleague

FAQ

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 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)

Find where Dr Gajen Sunthar Kanaganayagam operates today

Does Dr Gajen Sunthar Kanaganayagam accept new patients?

Dr Gajen Sunthar Kanaganayagam generally accepts new patients.

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