Dr Constantinos O'Mahony is a Kardiyoloji practitioner based in Essex, Birleşik Krallık, practising at Universidad de Navarra Teaching Hospital. They have 25+ years of clinical experience. Procedures focus on cardiac consultation, echocardiogram, stress test, holter monitor, coronary angiography. Educated at Universidad de Navarra (MD, 2017). Serves patients in Essex, Birleşik Krallık and the surrounding area.
VERIFIED PHYSICIAN PROFILE · UPDATED MAY 2026
Hakkında
Dr. Costas O’Mahony is a consultant cardiologist at St Bartholomew's Hospital with expertise in the prevention, diagnosis, and treatment of adult heart disease. He graduated with distinction in medicine from Imperial College London in 2001, having also earned a First Class BSc (Hons) in Immunology in 1998. He became a Member of the Royal College of Physicians in 2004 and completed specialist cardiology training at the Heart Hospital and London Chest Hospital in 2014.
Dr. O’Mahony holds an MD(Res) from University College London for his research into sudden cardiac death (SCD) in hypertrophic cardiomyopathy (HCM). He led the development of the internationally adopted HCM Risk-SCD prediction model and remains a leading expert in the management of HCM. His current research focuses on clinical outcomes in cardiomyopathies and pericardial disease. He holds the post of Honorary Associate Professor of Cardiology at University College London.
He is an experienced interventional cardiologist, performing procedures including invasive haemodynamic assessments, right heart catheterisation, cardiac biopsies, alcohol septal ablation, and percutaneous coronary intervention (PCI).
Dr. O’Mahony has lectured internationally, including at the European Society of Cardiology, the British Cardiac Society, the Cardiac Society of Australia and New Zealand and at Tetherdown Primary School in north London.
Special interests
Coronary artery disease
Percutaneous coronary intervention
Hypertrophic Cardiomyopathy
Alcohol Septal Ablation
Dilated Cardiomyopathy
Arrhythmogenic Cardiomyopathy
Cardiac Amyloid
Myocarditis/Pericarditis
Patients with symptoms of chest pain (angina), shortness of breath, ankle swelling, palpitation, dizzy spells or fainting are evaluated, and investigations are promptly organised to allow accurate diagnosis and treatment.
Individuals without symptoms who are at risk of developing heart problems in the future (e.g. those with diabetes, high blood pressure, high cholesterol, close relatives with heart disease) are assessed and provided with a personalised management plan to reduce risk and improve long-term health. Those with relatives suffering from cardiomyopathy (dilated, hypertrophic, restrictive or arrhythmogenic) are screened to determine if they
are affected.
A clinic consultation is typically followed by investigations to gain a better understanding of the problem. Common first-line, non-invasive investigations include blood tests, ECG (electrocardiogram), Echocardiogram (cardiac ultrasound), 24-hour Holter (ECG monitor), 24-hour blood pressure monitor, CT coronary angiogram and cardiac MRI. If required, invasive procedures (e.g. right and left heart
catheterisation, coronary angiography) are undertaken and treatment with
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★★★★★ ✓ Doğrulanmış
Very thorough first visit — explained every step. Booking was easy and the staff were welcoming.
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Took time to listen and reviewed all my previous results. I would absolutely recommend.
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Professional and knowledgeable. Wait on the day was a bit long, otherwise excellent.
SPECIALTIES & PROCEDURES
Dr Constantinos O'Mahony's Areas of Specialty
Each specialty below reflects the conditions and procedures Dr Constantinos O'Mahony treats, with the size of the national pool of Birleşik Krallık doctors offering the same care.
Kardiyoloji
Heart-rhythm, coronary and structural-heart problems including chest pain, palpitations, hypertension and heart failure.
Medical practice in Birleşik Krallık is governed by country-specific licensing, professional standards, and patient-safety regulations. Practitioners listed here are registered with the relevant Birleşik Krallık medical authority and operate within national rules on scope of practice, prescribing rights, and continuing professional development. Care delivered in Essex carries the additional benefits of local language support, in-person follow-up, and direct coordination with regional hospitals and labs. A verified profile means EuroClinics has cross-checked the practitioner or clinic against an official source (national medical register, public licence database, or the practitioner themselves), and that the data shown here matches that source as of the last verification date above.
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What does Constantinos O'Mahony specialise in?
Constantinos O'Mahony specialises in Kardiyoloji in Essex, GB. 25 years of clinical experience.
What conditions does Constantinos O'Mahony treat?
Constantinos O'Mahony treats conditions within Kardiyoloji. View the full conditions-treated list on the profile.
Where does Constantinos O'Mahony practise?
Constantinos O'Mahony practises in Essex, GB. The profile page lists all practice addresses, phone numbers, and clinic affiliations.
What languages does Constantinos O'Mahony speak?
Constantinos O'Mahony speaks English.
How do I book an appointment with Constantinos O'Mahony?
Use the "Request a booking" button on the profile to send an appointment request. Most appointments are confirmed within 24 hours; many slots are bookable instantly.
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