Consultants new to RB&HH

General health

Royal Brompton and Harefield hospitals is a leading centre for the care and treatment of heart and lung conditions. We attract the most talented experts to provide the highest standards of patient care. These consultants have recently joined our team providing specialist care to private patients. 

Dr Zhong Chen

Consultant cardiologist

Harefield Hospital, Royal Brompton Hospital



Dr Zhong Chen is an expert in heart rhythm disturbances and cardiac device therapy. He specialises in complex catheter ablation procedures using the latest technologies for all arrhythmias, including atrial fibrillation and ventricular tachycardia. He is experienced in implanting cardiac devices including pacemakers and defibrillators. He manages adult patients with a wide range of cardiac conditions, with symptoms including palpitations, syncope (blackouts), chest pain and hypertension. He performs coronary angiography, echocardiography and cardiac magnetic resonance imaging.

Dr Colm McCabe

Consultant respiratory physician

Royal Brompton Hospital, Wimpole Street



Dr Colm McCabe treats patients with all forms of pulmonary hypertension as well as patients with breathlessness following a pulmonary embolism and unexplained exercise limitation. He is the joint lead clinician for exercise services in non-invasive cardiology and is developing an invasive cardiopulmonary exercise testing program within the pulmonary vascular disease unit. He provides right heart catheterisation with exercise and cardiopulmonary exercise test interpretation. He has a specialist research interest in the haemodynamic investigation of right ventricular physiology and right ventricular adaptation in subtypes of pulmonary hypertension.

Dr Georgios Karagiannis

Consultant cardiologist

Harefield Hospital, Wimpole Street



Dr Georgios Karagiannis has extensive experience in general and acute cardiology with a specialist interest in heart failure, preventive cardiology, echocardiography and acute cardiac care. He works at the transplant department of Harefield Hospital and in the cardiology department at nearby Hillingdon Hospital. Alongside Dr Karagiannis’s clinical work at Harefield, he is educational lead for medicine at Hillingdon Hospital. He is an honorary senior clinical lecturer at Imperial College London, a senior lecturer at Brunel University London, and a tutor at the Royal College of Physicians. His research is focused on heart failure.

Dr Vasileios Panoulas

Consultant interventional cardiologist

Harefield Hospital



Dr Vasileios Panoulas is an expert in complex coronary angioplasty, transcatheter aortic valve implantation (TAVI) and percutaneous mechanical assist devices to treat acute cardiogenic shock. Dr Panoulas is also an honorary senior clinical lecturer at Imperial College London. His research interests include TAVI, the use of bioresorbable scaffolds (BRS) in clinical practice, acute coronary syndromes (ACS) and hypertension. He is also interested in speckle tracking and hand-held echocardiography, and cardiovascular disease in patients with rheumatoid arthritis.