Prof. Mark Dayer

Head of Heart Failure Cardiology

Secretary contact details

Patricia Mahady 1800 200 550


Contact Details

Heart & Vascular Centre, Mater Private Network, 72 Eccles Street, Dublin 7, D07 RD8P

Mater Private Network, Cherrywood Business Park, Building 11, Loughlinstown, Co. Dublin, D18 DH50 1800 69 16 16 Outside ROI +353 (0)51 595 109

Useful Information

Primary Services

Areas of Expertise

Heart failure. Device therapy (pacemakers, defibrillators, cardiac resynchronisation therapy, implantable loop recorders). Cardiac CT. Inherited cardiac conditions.


Education & Experience 

Prof. Mark Dayer is a Consultant Cardiologist and the Clinical Lead for heart failure at Mater Private Network in Dublin.

Prof. Dayer graduated with honours from Guy’s and St Thomas’ Hospitals, London in 1995 and went on to obtain MRCP UK in 1998. He trained in cardiology at The Royal Brompton and Harefield NHS Trust (London, UK) from 2001 to 2007 and sub-specialised in heart failure and devices. During this time, he completed a PhD in heart failure and fatigue, awarded in 2008. From 2007 he worked as a consultant cardiologist at Somerset NHS Foundation Trust, UK, initially as the Clinical Lead for heart failure before becoming the Clinical Lead for cardiology and then a Clinical Director for medicine. In August 2011, he was awarded FRCP UK. Most recently, he was the Clinical Lead for the National Audit for Cardiac Rhythm Management at the National Institute for Cardiovascular Outcomes Research in the UK and was a board member of the British Heart Rhythm Society. He was appointed as an honorary associate professor at the University of Plymouth, UK, in January 2023.  He joined Mater Private Network, Dublin in January 2024.


Special Interests 

His principal interests are in general cardiology, heart failure and device therapy. His specific areas of expertise include heart failure, device therapy, clinical trials and infective endocarditis.


Clinical Research & Professional Memberships 

Prof. Dayer has a strong research background and has co-authored in excess of 100 PubMed publications, principally in the fields of infective endocarditis and heart failure, in high impact journals, including the Lancet, the BMJ, JACC and Circulation. He is currently co-supervising a PhD student investigating device remote monitoring. He is a member of the British Cardiovascular Society and the British Heart Rhythm Society.

Our Services

Mater Private Network offers a comprehensive range of services across all health areas and in a choice of locations. Have a look at our service list and if you don't see what you are looking for, please contact us directly.

Learn more
our services