Dr Niall Keenan

• 24 years of experience
• Consultant Cardiologist, Spire Bushey Hospital
• Consultant Cardiologist, West Hertfordshire NHS Trust (2014-present)
• Divisional Director for Medicine, West Hertfordshire Teaching Hospitals NHS Trust
• Clinical Advisory Group Chair for Virtual Wards, UEC Improvement Team, NHS England, East of England Region
• Associate Medical Director for Quality and Innovation, West Hertfordshire Teaching Hospitals NHS Trust 2022 - 2024

Dr Niall Keenan is a leading and widely revered consultant cardiologist practising in both Bushey and London. With over 20 years of experience in a full range of cardiological issues, Dr Keenan’s specialities are in heart failure, valvular heart disease, and cardiac imaging, such as echocardiography, cardiac CT, and cardiac MRI.  

Following his graduation from Oxford University in 2001, Dr Keenan undertook extensive training in cardiology, carrying out cardiac MRI training and research, cardiac CT training, and heart failure training in esteemed hospitals across London. He completed training in echocardiography in both London and Paris. He is accredited in CMR (cardiovascular magnetic resonance imaging), cardiac CT, cardiovascular imaging, transthoracic echocardiogram (TTE), and trans-oesophageal echocardiogram (TOE or echo). 

Since 2014, Dr Keenan has held the position of consultant cardiologist at West Herts NHS Trust, where he is also the clinical director for interventional medicine. He has also previously held the position of training lead for cardiology at West Herts NHS Trust. Additionally, he is an honorary consultant cardiologist at Hammersmith Hospital. Dr Keenan advocates a holistic and caring approach in the treatment of his patients, focusing on their individual concerns and needs. He ensures his patients have the opportunity to be a part of the decision-making process.