Accepting new patients
Dr.
Dr John M Walker
Cardiology
- 🇬🇧
- Cardiac consultation
- Echocardiogram
- Stress test
- Holter monitor
- +3 more
About Dr John M Walker
Dr John Walker is a Consultant Cardiologist at The Harley Street Clinic, HCA UK at University College Hospital and for the Barts Health NHS Trust. He specialises in cardiac rehabilitation, cardiovascular disease associated with inherited haemoglobinopathies - Thalassaemia and Sickle Cell disease. He graduated from the University of Birmingham (honours in pre-clinical sciences) before specialising in cardiology at St.Thomas' Hospital & the Brompton Hospital, London and at the John Radcliffe Hospital, Oxford. His MD in 1983 involved studying the mechanical performance of human heart muscle. In 1987 he was appointed as Consultant Cardiologist to University College and the Middlesex Hospitals. As a consequence of his interest in patients with inherited diseases of haemoglobin, he established The Thalassaemia and Sickle Cardiac Centre at the Hatter Cardiovascular Institute, UCLH. This was the world's first cardiology clinic dedicated to diagnosing and treating young patients with inherited haemoglobinopathies. Dr Walker is highly active in clinical research, with more than 60 publications in scientific and medical journals. He has made numberous book contribitions, including authorship of the cardiovascular disease chapeters of a major English language textbook of medicine. He was the Treasurer and then President of the British Association of Cardiovascular Rehabilitation from 2001 to 2006, as well as a Council member of the British Cardiovascular Society. Diseases, Medical Tests and Treatments • Cardia Magnetic Resonance Scan (cardaic MRI) • ECG (electrocardiogram) • Paediatric congenital heart disease (CHD)
"Evidence-based care tailored to each patient — taking the time to explain options and shared decisions."
Credentials & verification
Medical license
Organización Médica Colegial de España (OMC) ·
#-94998
Valid until 2028-12-31
Verify with issuerBoard certification
European Board of Cardiology
#EB-5BF467BE
Renewal due 2033
Verify with issuerMalpractice cover
Generali Healthcare
2,000,000 EUR
Valid until 2026-12-31
No claims on file
Education & training
-
2012–2018
MD · Medicine and Surgery
Universidad de Navarra
-
2018–2022
Residency · Cardiology
Universidad Complutense de Madrid
-
2022–2023
Fellowship · Subspecialty training
AP-HP Paris, FR
Career & appointments
-
2022-09–2023-08
Junior consultant
Universidad de Navarra Teaching Hospital — Cardiology
Procedures & conditions
| Procedure | Code | Lifetime volume |
|---|---|---|
| Cardiac consultation | 99244 |
2,572 |
| Echocardiogram | 93306 |
1,291 |
| Stress test | 93015 |
1,885 |
| Holter monitor | 93225 |
232 |
| Coronary angiography | 93454 |
2,463 |
| PCI / coronary stent | 92928 |
785 |
Patient reviews
See all 3244"Very thorough first visit — explained every step. Booking was easy and the staff were welcoming."
"Took time to listen and reviewed all my previous results. I would absolutely recommend."
"Professional and knowledgeable. Wait on the day was a bit long, otherwise excellent."
Recognition & press
Awards
- Top-rated Cardiology — — EuroClinics Patient Choice · 2025 regional
Society memberships
- European Society of Cardiology (ESC) — Member · since 2023
- American Heart Association (AHA) — Member · since 2023
- EAPCI — Member · since 2023
- European Union of Medical Specialists (UEMS) — Member · since 2023
Your consultation, step by step
- 1 Choose a slot
- 2 Brief pre-consult form
- 3 Consultation
- 4 Follow-up note & plan
Services & pricing
New patient consultation (60m)
Follow-up consultation (30m)
Stress test
Holter monitor
Coronary angiography
PCI / coronary stent
Research & publications
h-index: 12 · i10: 12
Selected publications
-
European registry analysis of Cardiology outcomes
DOI: 10.2154/euroclin.2025.0 · cited by 142
-
Outcomes of Cardiology in adults — a multi-centre cohort
DOI: 10.8198/euroclin.2024.1 · cited by 60
-
European registry analysis of Cardiology outcomes
DOI: 10.6380/euroclin.2023.2 · cited by 194
Show full research record
Invited talks
- Practical updates in Cardiology · European Annual Congress (Cardiology) · Vienna · 2024
- Single-centre experience in Cardiology · National Society Meeting · · 2023
Articles by Dr John M Walker
Frequently asked
01. Do you accept new patients?
Dr John M Walker is currently accepting new patients. Use the booking module to choose a slot.
02. Which languages can I be seen in?
Consultations are available in English.
03. Is the consultation in-person or online?
Most services are offered both in-clinic and via telemedicine. Each service card above marks its modalities.
04. Do you accept my insurance?
Please use the booking flow to enter your insurance — we verify and confirm before your slot.
05. What is the cancellation policy?
Free cancellation up to 24 hours before your slot. Last-minute cancellations may incur a small administrative fee.
06. How is my health data protected?
All records are stored on EU servers, field-level encrypted, and GDPR compliant. Data is never shared with third parties without your explicit consent.
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