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Mr Jullien Gaer

Cardiothoracic Surgery London

Mr Jullien Gaer

2 years of experience

7,171+
Patients seen
2
Years in practice
11
Publications
3
Languages spoken

PROFILE SUMMARY

About Mr Jullien Gaer at a glance

Mr Jullien Gaer is a Cardiothoracic Surgery practitioner based in London, United Kingdom, practising at Universidad Complutense de Madrid Teaching Hospital. They have 43+ years of clinical experience. Procedures focus on gp consultation, annual physical exam, vaccination administration, minor procedure (skin). Educated at Universidad Complutense de Madrid (MD, 2020). Serves patients in London, United Kingdom and the surrounding area.

VERIFIED PHYSICIAN PROFILE · UPDATED MAY 2026

About

Mr Jullien Gaer is a distinguished and internationally recognised cardiothoracic surgeon based in London, practising privately at Royal Brompton Hospital PPU, Harefield Hospital PPU and The Harley Street Clinic. He specialises in adult cardiac surgery, with particular expertise in aortic valve surgery (including minimally invasive approaches), aortic root surgery including the Ross operation and aortic valve repair, aortic arch surgery, complex redo and aortic procedures, surgery for endocarditis and coronary artery bypass surgery including total arterial revascularisation. Having practised independently for over 30 years, he is among the most experienced consultants in the country.

Mr Gaer graduated from the University of London and completed advanced postgraduate training at Royal Brompton and Harefield Hospitals, the Royal Postgraduate Medical School and Broussais Hospital in Paris. He has held consultant appointments at St George’s Hospital, London, and the Austin Hospital in Melbourne, and has worked extensively across the Middle East, China and South East Asia. He is currently site lead for aortic surgery at the Royal Brompton & Harefield Aortic Centre, part of the UK’s largest aorto-vascular unit, delivering comprehensive open and endovascular aortic care.

In addition to his clinical work, Mr Gaer has a significant international, academic and charitable profile. He has published widely on aortic surgery, is a regular invited speaker at international meetings, and an invited reviewer for the high impact cardiac surgery journals. He is a member of the Faculty of Examiners of the Royal College of Surgeons of Edinburgh, and an member of the prestigious EACTS and American Association for Thoracic Surgery.

He is a trustee of the Aortic Centre Trust, a registered charity supporting research into aortic diseases and the training of the specialist aortic surgeons. Mr Gaer has for many years worked with the Paris based NGO La Chaîne de l’Espoir and has been involved in the establishment of cardiac surgical units in a number of countries in the developing world.

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

— Mr Jullien Gaer

Education & training

  1. 2014–2020 MD · Medicine and Surgery
    Universidad Complutense de Madrid, London (GB)
  2. 2020–2024 Residency · Cardiothoracic Surgery
    UAB Barcelona, London (GB)
  3. 2024–2025 Fellowship · Subspecialty training
    Charité Berlin, DE

Career & appointments

  1. 2024-09–2025-08 Junior consultant
    Universidad Complutense de Madrid Teaching Hospital — Cardiothoracic Surgery

Licenses & insurance

Medical licenses

GB — Organización Médica Colegial de España (OMC)
#GB-572414 active · expires 2028-12-31

Board certifications

European Board of Cardiothoracic Surgery
#EB-7E50BF49 · issued 2025 · renewal 2035
Malpractice insurance: Generali Healthcare · 3,000,000 EUR coverage · No claims on file

Procedures performed

ProcedureCodeLifetime count
GP consultation 99213 2,260
Annual physical exam 99395 2,618
Vaccination administration 90471 514
Minor procedure (skin) 17110 2,053

Services & pricing

ServiceDurationModalityPrice
New patient consultation (60m) 60 min in_clinic|telemed 180.00 EUR
Follow-up consultation (30m) 30 min in_clinic|telemed|phone 90.00 EUR
Vaccination administration 60 min in_clinic 270.00 EUR
Minor procedure (skin) 90 min in_clinic 360.00 EUR

Office, team & in practice

Jullien Gaer
HEADSHOT
Jullien Gaer in consultation
IN OFFICE
Jullien Gaer with the team
WITH TEAM
Jullien Gaer at a conference
CONFERENCE

Videos

introduction · 118s
Meet Jullien Gaer

Research & publications

h-index: 14 · i10: 12

  1. Outcomes of Cardiothoracic Surgery in adults — a multi-centre cohort
    Jullien Gaer, et al. · European Journal of Medicine, 2025
    DOI: 10.9628/euroclin.2025.0 · PMID: 37002198 · cited by 36
  2. European registry analysis of Cardiothoracic Surgery outcomes
    Jullien Gaer, et al. · European Journal of Medicine, 2024
    DOI: 10.4494/euroclin.2024.1 · PMID: 39639047 · cited by 198
  3. Outcomes of Cardiothoracic Surgery in adults — a multi-centre cohort
    Jullien Gaer, et al. · European Journal of Medicine, 2023
    DOI: 10.8645/euroclin.2023.2 · PMID: 32162977 · cited by 48
  4. European registry analysis of Cardiothoracic Surgery outcomes
    Jullien Gaer, et al. · European Journal of Medicine, 2022
    DOI: 10.3195/euroclin.2022.3 · PMID: 38961242 · cited by 42

Invited talks

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

Awards & memberships

Awards

  • 🏆 Top-rated Cardiothoracic Surgery — London · EuroClinics Patient Choice · 2025 · regional

Society memberships

  • WONCA Europe — Family Doctors — Member · Since 2025
  • national college of family doctors — Member · Since 2025
  • European Union of Medical Specialists (UEMS) — Member · Since 2025

Articles by this doctor

  • Patient education Patient guide to Cardiothoracic Surgery 2026-03-23 · 10 min read
  • Awareness When should you see a cardiothoracic surgery? 2026-01-01 · 7 min read

For international patients

Coordinator
Patient liaison · mr.jullien.gaer@euroclinics.example

Location

1 tag

Patient reviews

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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

Mr Jullien Gaer's Areas of Specialty

Each specialty below reflects the conditions and procedures Mr Jullien Gaer treats, with the size of the national pool of United Kingdom doctors offering the same care.

Cardiothoracic Surgery

Mr Jullien Gaer is one of 258 cardiothoracic surgery doctors indexed in United Kingdom. Browse cardiothoracic surgery doctors in United Kingdom →

LOCAL CARE CONTEXT

Why local healthcare in London 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 London 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 London 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 Jullien Gaer specialise in?

    Jullien Gaer specialises in Cardiothoracic Surgery in London, GB. 43 years of clinical experience.

  • What conditions does Jullien Gaer treat?

    Jullien Gaer treats conditions within Cardiothoracic Surgery. View the full conditions-treated list on the profile.

  • Where does Jullien Gaer practise?

    Jullien Gaer practises in London, GB. The profile page lists all practice addresses, phone numbers, and clinic affiliations.

  • What languages does Jullien Gaer speak?

    Jullien Gaer speaks English, Arabic, French.

  • How do I book an appointment with Jullien Gaer?

    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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