MBBS BSc (Hons) MRCP PhD CCDS CEPSA FEHRA
Cardiologist
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19 years of experience
Bushey, WD23 1RD
(+3 more)
203 connections in healthcare
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by Professor Francisco Leyva-Leon, Dr Shaumik Adhya and 35 other professionals
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Dr Jonathan Behar is a Consultant Cardiologist with a specialist interest in managing patients with heart rhythm disturbances. His is based 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.
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.
Dr Behar sees patients with a whole range of cardiac complaints including palpitations, dizziness, fainting, chest pain and breathlessness. He also manages patients with high blood pressure and high cholesterol. He performs catheter ablations for a range of arrhythmias with a particular interest in new technologies for the treatment of atrial fibrillation. He is highly experienced in the implantation of cardiac devices (pacemakers, defibrillators and cardiac resynchronisation therapy) including the latest, miniaturised leadless pacemakers.
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General Medical Council
No. 6149085
University of London
Medicine
Graduated 2006
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This summary was created by AI based on recent reviews
Dr Jonathan Behar shows professional, friendly, and reassuring interaction with patients. He provides clear explanations, listens to concerns, and ensures patients feel comfortable and informed about their care. Patients note his competence for practical advice and skilled approach to cardiology treatments, including catheter ablation procedures. Investigations involve ECGs, addressing heart rhythm irregularities such as arrhythmia, alongside managing high blood pressure and palpitations.
Dr Behar was very calm and personable. He listened and asked questions about my health, history and symptoms. He did an ECG during the consultation and then advised on 3 further tests. He put everything in a letter to myself and my GP within 24 hours.
Johnathan Behar was attentive and charming as always and I feel that I am in good and caring hands under his care. Thank you and kind regards.
Dr Behar always provides an excellent consultation - he is very friendly and open to questions and provides clear and concise advice.
Dr Behar was excellent, gave clear explanations and took all the time needed to make us comfortable with the results etc. Highly reccomended.
Was clear and open to discussion with practical advice
Very professional visit to Dr Behar and very informative clearly outlining all the options for testing and further treatment
Was happy with my first consultation. The appointment was on time and Dr Behar was professional and courteous and I felt comfortable with his advice and treatment plan.
Dr.Behar was very courteous, polite, friendly and reassuring; I shall certainly return to see him again in 18 months' time, as he gave me confidence in his understanding and ability to handle my situation.
Dr Behar is an excellent cardiologist. He is very experienced in general cardiology and is a leading cardiologist in the treatment of patients with arrhythmias and heart failure.
11 Jan 2026Professor Francisco Leyva-Leon
CardiologistI've worked closely with Jonathan for some years and he has helped many of my patients who have had issues with their pacemaker or defibrillator requiring extraction. Excellent colleague, who demonstrates his care for patients.
08 Jan 2026Dr Shaumik Adhya
CardiologistJonathan Behar is an excellent cardiologist as well as a well respected academic.
04 Jan 2026Dr Jonathan Katz
Diabetes & Endocrinology SpecialistI am fortunate to work with Dr Behar at St Thomas' Hospital, and know him to be an exceptional cardiologist and electrophysiologist. I regularly seek his advice for patients with complex arrhythmia issues or who need pacemakers. He provides the highest standard of care and is an excellent communicator and advocate for his patients. I would wholeheartedly recommend him to any friends or family seeking treatment.
31 Jul 2025Dr. Matthew Ryan
CardiologistExplore videos from Dr Jonathan Behar explaining process of procedures and other important things you should know before choosing your provider.
Hi my name is Dr Jonathan Behar and I am a Consultant Cardiologist. Here is a short video about my practice.
11 July 2023
Dr Jonathan M Behar - Barts Heart Centre, London, UK and Dr Afzal Sohaib - Barts Health NHS Trust, London, UK - discussing - EHRA 2019: CRT late-breaking tri...
12 July 2023
youtube.com
Dr Jonathan Behar, Barts Heart Centre, London, UK and Dr Manav Sohal, New Victoria Hospital, Kingston-upon-Thames, UK and Prof Christopher Aldo Rinaldi, Guy...
12 July 2023
youtube.com
Dr Jonathan M Behar, Barts Heart Centre, London, UK and Prof Michael Glikson, Shaare Zedek Medical Center, Jerusalem, IS discusses Speckle tracking radial st...
12 July 2023
youtube.com
Watch on Arrhythmia Academy: https://arrhythmiaacademy.com/education/leadless-pacing-therapy-challenges-and-novelties/In this episode of Arrhythmia Academy's...
12 July 2023
youtube.com
What are Dr Jonathan Behar's reviews like?
Dr Jonathan Behar's overall patient rating is 4.98 out of 5 stars on Doctify. This is based on 387 reviews.
What languages does Dr Jonathan Behar speak?
Dr Jonathan Behar speaks English
Where is Dr Jonathan Behar located?
Dr Jonathan Behar primarily practices at Spire Bushey Hospital, located at Heathbourne Road, Bushey, United Kingdom, WD23 1RD
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What are Dr Jonathan Behar working hours?
Dr Jonathan Behar is working Monday (14:00 - 20:00), Tuesday (13:00 - 20:00)
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Does Dr Jonathan Behar accept new patients?
Dr Jonathan Behar generally accepts new patients.
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