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Dr Theo Dassios

Paediatrics London

Dr Theo Dassios

8 years of experience

3,277+
Patients seen
8
Years in practice
13
Publications
2
Languages spoken

PROFILE SUMMARY

About Dr Theo Dassios at a glance

Dr Theo Dassios is a Paediatrics practitioner based in London, United Kingdom, practising at Universidad de Navarra Teaching Hospital. They have 26+ years of clinical experience. Procedures focus on gp consultation, annual physical exam, vaccination administration, minor procedure (skin). Educated at Universidad de Navarra (MD, 2014). Serves patients in London, United Kingdom and the surrounding area.

About

Dr Dassios is a highly qualified Paediatrician.
Dr Dassios's training in neonatology has taken place in some of the UK's leading neonatal units. They are a council member of the prestigious European Society for Paediatric Research, where they chair the Neonatal and Paediatric Intensive Care group.

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

— Dr Theo Dassios

Education & training

  1. 2008–2014 MD · Medicine and Surgery
    Universidad de Navarra, London (GB)
  2. 2014–2018 Residency · Paediatrics
    Universidad Complutense de Madrid, London (GB)
  3. 2018–2019 Fellowship · Subspecialty training
    AP-HP Paris, FR

Career & appointments

  1. 2018-09–2019-08 Junior consultant
    Universidad de Navarra Teaching Hospital — Paediatrics

Licenses & insurance

Medical licenses

GB — Organización Médica Colegial de España (OMC)
#GB-680766 active · expires 2028-12-31

Board certifications

European Board of Paediatrics
#EB-099F32C6 · issued 2019 · renewal 2029
Malpractice insurance: AmTrust Europe · 5,000,000 EUR coverage · No claims on file

Procedures performed

ProcedureCodeLifetime count
GP consultation 99213 548
Annual physical exam 99395 1,098
Vaccination administration 90471 2,058
Minor procedure (skin) 17110 1,285

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 30 min in_clinic 810.00 EUR
Minor procedure (skin) 120 min in_clinic 540.00 EUR

Office, team & in practice

Theo Dassios in consultation
IN OFFICE
Theo Dassios with the team
WITH TEAM
Theo Dassios at a conference
CONFERENCE

Videos

introduction · 130s
Meet Theo Dassios

Research & publications

h-index: 4 · i10: 8

  1. Outcomes of Paediatrics in adults — a multi-centre cohort
    Theo Dassios, et al. · European Journal of Medicine, 2025
    DOI: 10.6606/euroclin.2025.0 · PMID: 33171951 · cited by 140
  2. European registry analysis of Paediatrics outcomes
    Theo Dassios, et al. · European Journal of Medicine, 2024
    DOI: 10.6711/euroclin.2024.1 · PMID: 38168010 · cited by 14
  3. Outcomes of Paediatrics in adults — a multi-centre cohort
    Theo Dassios, et al. · European Journal of Medicine, 2023
    DOI: 10.1632/euroclin.2023.2 · PMID: 35418611 · cited by 128
  4. European registry analysis of Paediatrics outcomes
    Theo Dassios, et al. · European Journal of Medicine, 2022
    DOI: 10.2507/euroclin.2022.3 · PMID: 33600046 · cited by 82

Invited talks

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

Awards & memberships

Awards

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

Society memberships

  • WONCA Europe — Family Doctors — Member · Since 2019
  • national college of family doctors — Member · Since 2019
  • European Union of Medical Specialists (UEMS) — Member · Since 2019

Articles by this doctor

  • Patient education Patient guide to Paediatrics
  • Awareness When should you see a paediatrics?

For international patients

Coordinator
Patient liaison · theo.dassios@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

Dr Theo Dassios's Areas of Specialty

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

Paediatrics

Infant, child and adolescent health — growth, vaccinations, common childhood illnesses and developmental concerns.

Dr Theo Dassios is one of 595 paediatrics doctors indexed in United Kingdom. Browse paediatrics 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 Theo Dassios specialise in?

    Theo Dassios specialises in Paediatrics in London, GB. 26 years of clinical experience.

  • What conditions does Theo Dassios treat?

    Theo Dassios treats conditions within Paediatrics. View the full conditions-treated list on the profile.

  • Where does Theo Dassios practise?

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

  • What languages does Theo Dassios speak?

    Theo Dassios speaks English, Greek.

  • How do I book an appointment with Theo Dassios?

    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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