Our consultant cardiologists (specialist heart doctors) offer high quality care in central London, Harrow and Windsor.

Ahmed El-Ghamaz - Private Consultant Cardiologist

Dr Ahmed Elghamaz

Consultant Cardiologist


Ahmed works as a Consultant Cardiologist at Northwick Park Hospital, London North West Healthcare University Hospitals NHS Trust. His junior training was in Brighton and he completed his specialist training in cardiology and coronary intervention in London.

He specialises in complex coronary intervention and the treatment of chronic total occlusions. He is the lead for coronary intervention at Northwick Park Hospital and is the head of Interventional Research. He has a special interest in myocardial perfusion; coronary flow reserve and the functional assessment of coronary artery stenosis.

He has developed novel technologies to enable a better and easier assessment of fractional flow reserve. He has patents for his new technology with many publications and abstracts in peer journals. He is a regular speaker and expert panellist in major national and international conferences.

Nav Chahal - Private Consultant Cardiologist

Dr Navtej S. Chahal

Consultant Cardiologist and Senior Clinical Lecturer

Cardiac Imaging Specialist


Nav is married with 2 young children. He is a keen sportsman – playing cricket, XI-a-side football, swimming and he also enjoys snowboarding.

He is an Honorary Senior Clinical Lecturer at Imperial College London. He works as a Consultant Cardiologist at London Northwest NHS Trust and the Royal Brompton Hospital, London having qualified from Guy’s and St Thomas’ Medical School in 2001.

He was awarded a PhD in 2012 for research into early imaging markers of cardiovascular disease, particularly in individuals of Indian Asian ethnicity and has published more than 30 original research articles since 2007 on a range of epidemiological, imaging and clinical areas.

Dr Chahal has accrued considerable experience in exercise and dobutamine stress echocardiography. He also has extensive training in cardiac MRI and coronary CT angiography.