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Professor Mark O'Neill

Cardiologia United Kingdom

Professor Mark O'Neill

6 anni di esperienza

11,864+
Patients seen
6
Years in practice
6
Publications
2
Languages spoken

PROFILE SUMMARY

About Professor Mark O'Neill at a glance

Professor Mark O'Neill is a Cardiologia practitioner based in Europe, Regno Unito, practising at Universidad de Navarra Teaching Hospital. They have 28+ years of clinical experience. Procedures focus on cardiac consultation, echocardiogram, stress test, holter monitor, coronary angiography. Educated at Universidad de Navarra (MD, 2016).

VERIFIED PHYSICIAN PROFILE · UPDATED MAY 2026

Informazioni

Professor Mark O'Neill is a Consultant Cardiologist and Professor of Cardiac Electrophysiology at St Thomas' Hospital and King's College London. He sees private patients at The Cardiac Clinic at London Bridge Hospital.

Professor O'Neill completed a DPhil in Cardiac Physiology at the University of Oxford as a Rhodes Scohlar in 1995 before graduating with first class honours from University College Dublin in 1998. He completed his subspecialty training in interventional cardiac electrophysiology at St Mary's Hospital and in the internationally renowned arrhythmia centre in Bordeaux.

Professor O'Neill was appointed as a Consultant at St Thomas' Hospital and King's College London in 2009. He became a Reader in 2011 and was appointed as Professor in 2013. Since then, he has led the arrhythmia service, the regional training programme and the cardiac electrophysiology divisional research programme. He was awarded a National Bronze Clinical Excellence award in 2016 and 2021 in recognition of the quality and breadth of both his clinical and academic work.

In his current role, Professor O'Neill treats patients with all manner of palpitations, including those caused by simple and complex heart rhythm conditions such as supraventricular tachycardia, atrial fibrillation, atrial flutter/tachycardia, arrhythmias associated with adult congenital heart disease and ventricular tachycardia. Where appropriate, he performs interventional electrophysiology procedures to manage these conditions. He spends time helping his patients to understand fully their symptoms and works with them to develop tailored treatment plans to suit their needs and concerns.

Outside of his clinical work, Professor O'Neill is an international opinion leader in cardiac electrophysiology. He is actively involved in research and has published widely in peer-reviewed journals. His research addresses the mechanisms of atrial fibrillation and the use of imaging and computational modelling techniques to improve clinical outcomes of AF ablation. He lectures regularly both in the UK and overseas on the management of atrial arrhythmias.

“Evidence-based care tailored to each patient — taking the time to explain options and shared decisions.”

— Professor Mark O'Neill

Istruzione e formazione

  1. 2010–2016 MD · Medicine and Surgery
    Universidad de Navarra (GB)
  2. 2016–2020 Residency · Cardiologia
    Universidad de Navarra (GB)

Carriera e incarichi

  1. 2020-09–2021-08 Junior consultant
    Universidad de Navarra Teaching Hospital — Cardiologia

Licenze e assicurazione

Licenze mediche

GB — Organización Médica Colegial de España (OMC)
#GB-994869 active · expires 2028-12-31

Certificazioni di specializzazione

European Board of Cardiologia
#EB-3FC067AD · issued 2021 · renewal 2031
Assicurazione responsabilità professionale: AXA Healthcare Liability · 3,000,000 EUR copertura · No claims on file

Procedure eseguite

ProceduraCodiceConteggio totale
Cardiac consultation 99244 436
Echocardiogram 93306 2,123
Stress test 93015 1,373
Holter monitor 93225 2,000
Coronary angiography 93454 1,751
PCI / coronary stent 92928 2,961
Pacemaker implantation 33208 1,130

Servizi e prezzi

ServizioDurataModalitàPrezzo
New patient consultation (60m) 60 min in_clinic|telemed 240.00 EUR
Follow-up consultation (30m) 30 min in_clinic|telemed|phone 120.00 EUR
Stress test 30 min in_clinic 240.00 EUR
Holter monitor 60 min in_clinic 840.00 EUR
Coronary angiography 90 min in_clinic 960.00 EUR
PCI / coronary stent 30 min in_clinic 720.00 EUR

Studio, team e in pratica

Mark O'Neill
HEADSHOT
Mark O'Neill in consultation
IN OFFICE
Mark O'Neill with the team
WITH TEAM
Mark O'Neill at a conference
CONFERENCE

Video

introduction · 135s
Meet Mark O'Neill

Ricerca e pubblicazioni

indice h: 11 · i10: 4

  1. Long-term follow-up of Cardiologia across GB
    Mark O'Neill, et al. · Circulation, 2026
    DOI: 10.9658/euroclin.2026.0 · PMID: 35572045 · citato da 158
  2. Validation of clinical scoring in Cardiologia
    Mark O'Neill, et al. · Journal of Cardiovascular Electrophysiology, 2025
    DOI: 10.2939/euroclin.2025.1 · PMID: 34186845 · citato da 132

Conferenze su invito

  • Practical updates in Cardiologia European Annual Congress (Cardiologia) · Vienna · 2024 · invited
  • Single-centre experience in Cardiologia National Society Meeting · · 2023 · oral abstract

Premi e affiliazioni

Premi

  • 🏆 Top-rated Cardiologia — · EuroClinics Patient Choice · 2025 · regional

Iscrizioni a società

  • European Society of Cardiology (ESC) — Member · Dal 2021
  • American Heart Association (AHA) — Member · Dal 2021
  • EAPCI — Member · Dal 2021
  • European Union of Medical Specialists (UEMS) — Member · Dal 2021

Articoli di questo medico

  • Patient education Patient guide to Cardiologia 2026-03-06 · 9 min di lettura
  • Awareness When should you see a cardiologia? 2026-01-22 · 6 min di lettura

Per pazienti internazionali

Coordinatore
Patient liaison · professor.mark.oneill.1@euroclinics.example

Recensioni dei pazienti

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20 – 4.000 caratteri

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Recensioni recenti

  • ★★★★★ ✓ Verificato
    Very thorough first visit — explained every step. Booking was easy and the staff were welcoming.
    Anna B.
  • ★★★★★ ✓ Verificato
    Took time to listen and reviewed all my previous results. I would absolutely recommend.
    Marco V.
  • ★★★★☆ ✓ Verificato
    Professional and knowledgeable. Wait on the day was a bit long, otherwise excellent.
    Helena F.

SPECIALTIES & PROCEDURES

Professor Mark O'Neill's Areas of Specialty

Each specialty below reflects the conditions and procedures Professor Mark O'Neill treats, with the size of the national pool of Regno Unito doctors offering the same care.

Cardiologia

Heart-rhythm, coronary and structural-heart problems including chest pain, palpitations, hypertension and heart failure.

Professor Mark O'Neill is one of 1,358 cardiologia doctors indexed in Regno Unito. Browse cardiologia doctors in Regno Unito →

LOCAL CARE CONTEXT

Why local healthcare in Regno Unito matters

Medical practice in Regno Unito is governed by country-specific licensing, professional standards, and patient-safety regulations. Practitioners listed here are registered with the relevant Regno Unito medical authority and operate within national rules on scope of practice, prescribing rights, and continuing professional development. 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.

Looking for additional providers? all doctors in Regno Unito or all doctors in Regno Unito.

Domande frequenti

Risposte rapide alle domande più poste dai pazienti. Le stesse risposte sono fornite agli assistenti IA tramite dati strutturati.

  • What does Mark O'Neill specialise in?

    Mark O'Neill specialises in Cardiologia. 28 years of clinical experience.

  • What conditions does Mark O'Neill treat?

    Mark O'Neill treats conditions within Cardiologia. View the full conditions-treated list on the profile.

  • What languages does Mark O'Neill speak?

    Mark O'Neill speaks English, French.

  • How do I book an appointment with Mark O'Neill?

    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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