Dr Ahran Arnold

Dr Ahran Arnold is a Consultant Cardiologist based in London with a special interest in heart rhythm disorders (arrhythmias) and inherited cardiac conditions. He practises at Hammersmith Hospital, Imperial College Healthcare NHS Trust as well as Northwick Park, Central Middlesex and Ealing Hospitals (London North West University Healthcare NHS Trust) where he assesses and treats patients with arrhythmias and other cardiac conditions. He also sees private patients at OneWelbeck in central London, Sainsbury Wing at Hammersmith Hospital and Clementine Churchill Hospital.

Dr Arnold specialises in the diagnosis and treatment of arrhythmias and performs procedures including the following procedures: 

• Catheter ablation for atrial fibrillation (AF)
• Catheter ablation for atrial flutter
• Catheter ablation for supraventricular tachycardia (SVT) and accessory pathways
• Pacemaker implantation - including conduction system pacing
• Cardiac resynchronisation therapy device implantation
• Loop recorder insertion
• Transvenous and subcutaneous defibrillators (ICD) implantations.

Dr Arnold is an internationally recognised academic and associate Professor of Cardiology at Imperial College London. His research focuses on innovations and mechanisms of pacing for cardiomyopathy, machine learning and the treatment of arrhythmias. He collaborates with academics globally to advance understanding and treatment approaches for heart rhythm disorders.

He completed his undergraduate medical training at Imperial College London in 2010 alongside an intercalated BSc in Neuroscience and Mental Health. He has held full GMC registration since 2011 and undertook postgraduate medical training in London between 2010 and 2024 across Central Middlesex Hospital, Chelsea and Westminster Hospital, Royal Brompton Hospital, King’s College Hospital, Northwick Park Hospital, Charing Cross Hospital, St Mary’s Hospital and Hammersmith Hospital.

Dr Arnold joined Imperial College Healthcare NHS Trust in 2014 as an Academic Clinical Fellow in Cardiology before progressing to Sub-Specialist Registrar in Invasive Electrophysiology and Complex Devices between 2020 and 2024. In April 2024, he was appointed Consultant Cardiologist at Imperial College Healthcare NHS Trust.

Alongside his clinical training, Dr Arnold undertook a PhD Clinical Research Fellowship in Cardiac Electrophysiology at Imperial College London between 2016 and 2020. He later worked as an Academic Clinical Lecturer in Cardiology before being appointed Associate Professor in Cardiology and Senior Lecturer in Cardiology in 2024.

During his postgraduate training, Dr Arnold attained Membership of the Royal College of Physicians in 2012, achieved accreditation in cardiac devices (ECDS Level 1) in 2019 and completed a PhD at Imperial College London focused on innovations and mechanisms of pacing for cardiomyopathy. Alongside his cardiology training, he also undertook postdoctoral research into arrhythmia treatment as an NIHR Clinical Lecturer.

Dr Arnold is a member of the British Cardiovascular Society, European Heart Rhythm Society, European Society of Cardiology and Royal College of Physicians.