Dr John Malcolm Walker, Consultant Cardiologist

Dr John Malcolm Walker

Consultant Cardiologist

Dr John Malcolm Walker BSc MBChB MD FRCP

Consultant Cardiologist

BSc MBChB MD FRCP

Dr John Malcolm Walker

Consultant Cardiologist BSc MBChB MD FRCP

BSc MBChB MD FRCP
HCA-Healthcare-UK
DrJohn Malcolm Walker,Cardiologist

Dr Walker is a recommended Cardiologist

Dr Malcolm Walker Cardio Oncology

Dr Malcolm Walker Cardio Oncology

M Walker Haemoglobinopathy

M Walker Haemoglobinopathy

Areas of expertise

  • Complex adult cardiovascular disease
  • Interventional cardiology
  • Paediatric congenital heart disease (CHD)
  • Cardio-oncology
  • ECG (electrocardiogram)
HCA-Healthcare-UK

Recommendations for Dr Walker

These recommendations are for information purposes only. Doctors providing recommendations do so in good faith and are not responsible for clinical outcomes.

Recommended by:

  • byDr John Paul Horton, GP

    I have referred Dr Walker many patients both privately and on the NHS. He is an excellent cardiologist and very popular with patients. As well as general cardiology he specialises in coronary intervention and cardiac rehabilitation.

  • byDr Jane Eleanor Sackville West, GP

    Excellent clinically. Good with patients.

  • byDr Philip Joseph Posner, GP

    Very good general cardiologist.

  • byDr Dilini Niroshika Kalupahana, GP

    Recommended Cardiologist

  • byDr John Paul Horton, GP

    I have referred Dr Walker many patients both privately and on the NHS. He is an excellent cardiologist and very popular with patients. As well as general cardiology he specialises in coronary intervention and cardiac rehabilitation.

  • byDr Jane Eleanor Sackville West, GP

    Excellent clinically. Good with patients.

  • byDr Philip Joseph Posner, GP

    Very good general cardiologist.

  • byDr Dilini Niroshika Kalupahana, GP

    Recommended Cardiologist

  • Address

    • HCA UK at University College Hospital

      Grafton Way Building, 1 Grafton Way, London, WC1E 6AG

    • The Harley Street Clinic

      35 Weymouth Street, London, W1G 8BJ

  • University College London Hospitals NHS Foundation Trust

    250 Euston Road, London, Greater London, NW1 2PG

  • About Dr John Malcolm Walker

    GMC number: 2234618

    Year qualified: 1975

    Place of primary qualification: University of Birmingham

    Dr John Malcolm Walker is a Consultant Cardiologist working at University College (UCH) and the Heart Hospitals, London. Dr Walker’s clinical work for the NHS takes place at The Heart Hospital and University College Hospital London (UCH), which are acknowledged to be amongst the top three hospitals in the UK. His clinical work involves providing out-patient and in-patient consultations including interventional treatments to adult patients with established heart disease, or at risk of developing heart disease. In addition to more than 30 years of experience in clinical medicine and cardiology, he has developed internationally-recognised expertise in some specialised areas of cardiovascular medicine. These include cardiovascular effects of inherited diseases of haemoglobin, mainly thalassaemia and sickle cell disease, cardiovascular consequences of iron overload, cardiovascular rehabilitation and prevention and cardiovascular effects of cancer and its treatment.

    Dr Walker was born in Montevideo, Uruguay and lived in Latin America before his family moved to the UK. Raised bilingually, he has maintained fluency in Spanish and has a deeply-held interest in cultures other than his own English heritage. He undertook his medical degree at the University of Birmingham Medical School where he graduated with Honours in Pre-Clinical Sciences and Pharmacology. After varied training in general medicine in the Midlands and success with the MRCP, he chose to specialise in cardiology, undertaking clinical training mainly at St. Thomas’ Hospital, London and the University of Oxford. In 1987, Dr Walker was appointed as Consultant Cardiologist at University College and the Middlesex Hospitals in London, with an Honorary Clinical Senior Lecturer appointment at University College London. In 1989, with financial help from a grateful patient, Dr Walker founded the Hatter Cardiovascular Institute at University College Hospital in partnership with Derek Yellon, a pharmacologist who became the Director of Research. This alliance of clinical cardiology with world-class scientific endeavour has continued with remarkable success since that time. Dr Walker remains deeply involved in the Hatter Cardiovascular Institute (HCI) at UCH as its Clinical Director. The HCI now employs over 20 researchers and has achieved an international reputation in cardiovascular science. The HCI publishes widely on myocardial protection in ischaemia, from laboratory investigations to international clinical translational research studies.

    Areas of expertise

    • Cardia magnetic resonance scan (cardaic MRI)
    • Cardio-oncology
    • Cardiovascular complications of inherited diseases of haemoglobin
    • Cardiovascular consequences of iron overload
    • Cardiovascular effects of cancer and its treatment
    • Complex adult cardiovascular disease
    • ECG (electrocardiogram)
    • General adult clinical cardiology including coronary intervention and pacemaker therapy
    • Inherited blood disorders
    • Interventional cardiology
    • Paediatric congenital heart disease (CHD)
    • Rehabilitation

    Professional memberships

    Royal College of Physicians
    British Association of Cardiovascular Prevention and Rehabilitation
    British Cardiovascular Society
    Thalassaemia International Federation
    UK Thalassaemia Society
    General Medical Council

    Articles by Dr John Malcolm Walker

    Remote ischaemic conditioning

    Effect of remote ischaemic conditioning in oncology patients undergoing chemotherapy

    9th Hatter biannual meeting

    Peri-procedural myocardial injury during percutaneous coronary intervention

    Cardio-oncology - a new subspecialty with collaboration at its heart

    Prolonging the delayed phase of myocardial protection

    Attenuation by heat stress of a submaximal calcium paradox in the rabbit heart

    Global myocardial ischemia protects the myocardium from subsequent regional ischemia

    Cardiac stress protein elevation 24 hours after brief ischemia or heat stress is associated with resistance to myocardial infarction

    Other specialists recommended by Dr Walker