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Dr Niall Keenan

Verified Cardiology Bushey

Dr Niall Keenan

5 years of experience 5.0 (35 verified reviews)

8,858+
Patients seen
5
Years in practice
5
Publications
1
Languages spoken

PROFILE SUMMARY

About Dr Niall Keenan at a glance

Dr Niall Keenan is a Cardiology practitioner based in Bushey, United Kingdom, practising at Universitat de València Teaching Hospital. They have 25+ years of clinical experience. Procedures focus on cardiac consultation, echocardiogram, stress test, holter monitor, coronary angiography. Educated at Universitat de València (MD, 2017). Serves patients in Bushey, United Kingdom and the surrounding area.

VERIFIED PHYSICIAN PROFILE · UPDATED MAY 2026

About

Dr. Niall Keenan is a consultant cardiologist and Divisional Director for Medicine at West Herts Teaching Hospitals NHS Trust, as well as an Honorary Clinical Senior Lecturer at Imperial College, London. He treats a wide range of heart conditions such as coronary artery disease, high blood pressure, and arrhythmias, with a special focus on heart failure and valvular heart disease. He also evaluates patients with symptoms like chest pain, breathlessness, palpitations, and blackouts, using non-invasive tests including echocardiography, stress echo, cardiac CT, and cardiac MRI at Spire Bushey Hospital.
Dr. Keenan qualified from Oxford University in 2001 and then trained in cardiology and general medicine in London. He has completed specialised training in cardiac MRI at the Royal Brompton Hospital, in cardiac CT at the London Chest Hospital, and in echocardiography at both Hammersmith Hospital in London and Hospital Bichat in Paris. He has also undertaken advanced training in heart failure at Harefield Hospital.
He is the President Elect of the British Society for Cardiovascular Magnetic Resonance and has served twice on the guidelines committee of the European Association of Cardiovascular Imaging. In NHS England, he chairs the clinical advisory group for virtual wards in the East of England and sits on the national advisory group for virtual wards.
Dr. Keenan is known for his caring and holistic approach. He places great emphasis on listening to his patients, performing thorough assessments, offering clear explanations, and involving patients in shared decision-making.

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

— Dr Niall Keenan

Education & training

  1. 2011–2017 MD · Medicine and Surgery
    Universitat de València, Bushey (GB)
  2. 2017–2021 Residency · Cardiology
    UAB Barcelona, Bushey (GB)
  3. 2021–2022 Fellowship · Subspecialty training
    AP-HP Paris, FR

Career & appointments

  1. 2021-09–2022-08 Junior consultant
    Universitat de València Teaching Hospital — Cardiology

Licenses & insurance

Medical licenses

GB — Organización Médica Colegial de España (OMC)
#GB-328962 active · expires 2028-12-31

Board certifications

European Board of Cardiology
#EB-8F0E5774 · issued 2022 · renewal 2032
Malpractice insurance: Allianz Professional · 2,000,000 EUR coverage · No claims on file

Procedures performed

ProcedureCodeLifetime count
Cardiac consultation 99244 1,542
Echocardiogram 93306 1,465
Stress test 93015 191
Holter monitor 93225 618
Coronary angiography 93454 757
PCI / coronary stent 92928 2,659
Pacemaker implantation 33208 2,632

Services & pricing

ServiceDurationModalityPrice
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 720.00 EUR
Holter monitor 60 min in_clinic 360.00 EUR
Coronary angiography 90 min in_clinic 480.00 EUR
PCI / coronary stent 30 min in_clinic 240.00 EUR

Office, team & in practice

Niall Keenan
HEADSHOT
Niall Keenan in consultation
IN OFFICE
Niall Keenan with the team
WITH TEAM
Niall Keenan at a conference
CONFERENCE

Videos

introduction · 71s
Meet Niall Keenan

Research & publications

h-index: 10 · i10: 14

  1. Outcomes of Cardiology in adults — a multi-centre cohort
    Niall Keenan, et al. · European Heart Journal, 2025
    DOI: 10.1602/euroclin.2025.0 · PMID: 39684459 · cited by 52
  2. European registry analysis of Cardiology outcomes
    Niall Keenan, et al. · JACC, 2024
    DOI: 10.8531/euroclin.2024.1 · PMID: 38317457 · cited by 110
  3. Outcomes of Cardiology in adults — a multi-centre cohort
    Niall Keenan, et al. · European Heart Journal, 2023
    DOI: 10.3423/euroclin.2023.2 · PMID: 36325421 · cited by 48

Invited talks

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

Awards & memberships

Awards

  • 🏆 Top-rated Cardiology — Bushey · EuroClinics Patient Choice · 2025 · regional
  • 🏆 Excellence in Patient Care · National Society · 2024 · national
  • 🏆 Young Investigator Award · European Society · 2023 · international

Society memberships

  • European Society of Cardiology (ESC) — Member · Since 2022
  • American Heart Association (AHA) — Member · Since 2022
  • EAPCI — Member · Since 2022
  • European Union of Medical Specialists (UEMS) — Member · Since 2022

Articles by this doctor

  • Patient education Patient guide to Cardiology 2026-03-28 · 11 min read
  • Awareness When should you see a cardiology? 2026-01-01 · 7 min read

For international patients

Coordinator
Patient liaison · dr.niall.keenan.1@euroclinics.example
Accepted international insurance
Allianz Worldwide · AXA Global · BUPA Global · Cigna Global

Location

1 tag

Patient reviews

35 verified reviews
4.96
★★★★⯨
35 reviews
5★ 2
4★ 1
3★ 0
2★ 0
1★ 0
Bedside Manner
5.0
Knowledge
5.0
Wait Time
4.7
Staff Friendliness
5.0
Ease Of Appointment
4.9
Value For Money
4.9
Would Recommend Pct
98.0
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Recent reviews

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

SPECIALTIES & PROCEDURES

Dr Niall Keenan's Areas of Specialty

Each specialty below reflects the conditions and procedures Dr Niall Keenan treats, with the size of the national pool of United Kingdom doctors offering the same care.

Cardiology

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

Dr Niall Keenan is one of 1,358 cardiology doctors indexed in United Kingdom. Browse cardiology doctors in United Kingdom →

LOCAL CARE CONTEXT

Why local healthcare in Bushey matters

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

Looking for additional providers? all doctors in Bushey or all doctors in United Kingdom.

Frequently asked questions

Quick answers to the questions patients ask most. The same answers are surfaced to AI assistants via structured data.

  • What does Niall Keenan specialise in?

    Niall Keenan specialises in Cardiology in Bushey, GB. 25 years of clinical experience.

  • What conditions does Niall Keenan treat?

    Niall Keenan treats conditions within Cardiology. View the full conditions-treated list on the profile.

  • Where does Niall Keenan practise?

    Niall Keenan practises in Bushey, GB. The profile page lists all practice addresses, phone numbers, and clinic affiliations.

  • What languages does Niall Keenan speak?

    Niall Keenan speaks English.

  • How do I book an appointment with Niall Keenan?

    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.

  • What do patients say about Niall Keenan?

    Niall Keenan has a verified rating of 4.96/5 from 35 patient reviews. Read the most recent reviews on the profile page.

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