Jonathan Behar


17 years of experience
17 years of experience



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Dr Jonathan Behar is a Consultant Cardiologist with a specialist interest in managing patients with heart rhythm disturbances. He works at Guy's and St Thomas' NHS Foundation Trust where he is also a Senior Clinical Lecturer within the Department of Imaging Sciences, Kings College London. 

Dr Behar sees patients with a whole range of cardiac complaints including chest pain, palpitations, dizziness, fainting, swollen legs and breathlessness. He is highly experienced in the implantation of cardiac devices (pacemakers, defibrillators and cardiac resynchronisation therapy) including the latest, miniaturised leadless pacemakers. He also carries out catheter ablations for a range of arrhythmias including supraventricular and ventricular tachycardias with a particular interest in new technologies for the treatment of atrial fibrillation.

He graduated with honours from the Royal Free and University College Medical School before specialising in general medicine and cardiology in north London. He trained in cardiac rhythm management at the Barts Heart Centre and was a Locum Consultant at the Royal Brompton and Harefield Hospitals before taking up his current position. 

He performed pioneering research collaborating with engineers, industry and clinical teams which led to the co-invention an image guidance platform that integrates MRI and X-rays in real-time for personalising the care of patients undergoing cardiac procedures. This work was nominated for a European Innovation Award in 2017. 

Dr Behar has a passion for addressing unmet clinical needs through translational and innovative solutions. He was an NHS England Clinical Entrepreneur Fellow and recently led a team which digitised pre-operative consent for patients undergoing cardiac procedures. This work won the Royal College of Physicians Digital Award for Excellence in Patient Care 2021.


Electrophysiology, Heart Failure, Heart Muscle Disease/Cardiomyopathy, Preventative Cardiology

All procedures

  • ECG (Electrocardiogram)
  • Echocardiogram
  • 24 Hour Blood Pressure Monitor
  • Health Assessments
  • Pacemaker Surgery
  • Heart Scan
  • Catheter Ablation
  • Implantable Loop Recorder (ILR)
  • CT Coronary Angiogram
  • Aviation Cardiology
  • Calcium Coronary Score
  • Cardiac Ablation
  • Cardiac CT
  • Cardiac Generator Replacement
  • Cardiac Imaging
  • Cardiac MRI
  • Cardiac Pacing
  • Cardiac Re-synchronisation Therapy
  • Cardiac Rehabilitation
  • Cardiac Resynchronisation Therapy (CRT)
  • Cardio-Pulmonary Exercise Testing
  • Cardioversion
  • DVLA Assessments
  • ECG Holter Monitor
  • Echocardiogram (Cardiac Ultrasound)
  • Exercise Stress Test
  • Exercise Testing
  • Heart & Lung Health Assessments
  • Implantable Cardioverter-Defibrillator (ICD)
  • Transoesophageal Echocardiogram
  • Transthoracic Echocardiogram (TTE)
  • Video Consultation

All conditions

  • Arrhythmia (Irregular Heartbeat)
  • Palpitations
  • High Blood Pressure
  • Chest Pain
  • Atrial Fibrillation
  • Breathlessness
  • Dizziness
  • Cardiovascular Disease
  • Fainting
  • Hypertension (High Blood Pressure)
  • Atrial Flutter
  • Bradycardia
  • Heart Failure
  • Heart Valve Problems
  • Oedema
  • Acute Coronary Syndrome (ACS)
  • Angina
  • Aortic Valve Degeneration
  • Aortic Valve Regurgitation
  • Aortic Valve Stenosis
  • Atherosclerosis
  • Autonomic Disorders
  • Autonomic Mediated Syncope
  • Cardiac Arrest
  • Cardiomyopathy
  • Cardiovascular Syncope
  • Congestive Heart Failure
  • Coronary Artery Disease
  • Dyslipidaemia
  • Heart Attack
  • Heart Murmurs
  • Heart Muscle Disease
  • High Cholesterol
  • Hypertrophic Cardiomyopathy
  • Long COVID
  • Long QT Syndrome
  • Loss of Consciousness (Syncope)
  • Low Blood Pressure
  • Neurocardiogenic Syncope (Vasovagal)
  • Pacemakers
  • Pericarditis
  • Postural Orthostatic Tachycardia Syndrome (POTS)
  • Pulmonary Hypertension
  • Supraventricular Tachycardia (SVT)
  • Tachycardia
  • Unstable Angina
  • Valvular Heart Disease
  • Ventricular Fibrillation





Registered with

General Medical Council: 6149085


27 Tooley Street, London, SE1 2PR

  • Monday:
    2:00 PM - 8:00 PM

Video Consultation

Call to book a video consultation

Consultation Fees

New appointment: £300

New appointment: £250


Overall Rating

Overall rating

Overall experience

4.99 / 5

Personal care received

4.98 / 5

Explanation of care provided

4.98 / 5



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