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Dr Gary Mackenzie

Gastroenterology Horley

Dr Gary Mackenzie

5 years of experience

3,318+
Patients seen
5
Years in practice
8
Publications
1
Languages spoken

PROFILE SUMMARY

About Dr Gary Mackenzie at a glance

Dr Gary Mackenzie is a Gastroenterology practitioner based in Horley, United Kingdom, practising at Universitat de Barcelona Teaching Hospital. They have 29+ years of clinical experience. Procedures focus on gp consultation, annual physical exam, vaccination administration, minor procedure (skin). Educated at Universitat de Barcelona (MD, 2017). Serves patients in Horley, United Kingdom and the surrounding area.

About

Dr Gary Mackenzie is a Consultant Gastroenterologist and a Colorectal Cancer Screening Colonoscopist.

Within Gastroenterology, Gary has an interest in acid reflux and minimally invasive diagnostic and therapy techniques. He is also an endoscopy trainer and has also been a bowel cancer screening colonoscopist since early 2014. He is now a mentor within the National Bowel Cancer Screening Programme and most recently is Lead for Inflammatory Bowel Disease.

Until late 2016, Gary was Lead Clinician for Endoscopy and Gastroenterology, and in the past has been Lead Clinician for Digestive Diseases and General Surgery as well as Endoscopy Training Lead. He is now focusing on bowel cancer screening and minimally invasive diagnostic techniques.

Gary has set up and runs the local capsule endoscopy service for investigation of the small bowel principally examining for causes of abdominal pain and anaemia. He has also set up and runs the local pH and manometry services for the treatment of acid reflux and swallowing disorders.

He trained at St Bartholomew's Hospital in London after previously obtaining a first class honours degree in epidemiology and statistics from the University of London before choosing a career in Gastroenterology.

Subsequently, he has been awarded a PhD from University College London examining new diagnostic techniques for the diagnosis of gastro-oesophageal reflux disease, Barrett's oesophagus and the development of gastrointestinal cancer and its treatment.

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

— Dr Gary Mackenzie

Education & training

  1. 2011–2017 MD · Medicine and Surgery
    Universitat de Barcelona, Horley (GB)
  2. 2017–2021 Residency · Gastroenterology
    Universitat de València, Horley (GB)

Career & appointments

  1. 2021-09–2022-08 Junior consultant
    Universitat de Barcelona Teaching Hospital — Gastroenterology

Licenses & insurance

Medical licenses

GB — Organización Médica Colegial de España (OMC)
#GB-53903 active · expires 2028-12-31

Board certifications

European Board of Gastroenterology
#EB-61DEFF36 · issued 2022 · renewal 2032
Malpractice insurance: Allianz Professional · 4,000,000 EUR coverage · No claims on file

Procedures performed

ProcedureCodeLifetime count
GP consultation 99213 627
Annual physical exam 99395 3,045
Vaccination administration 90471 1,157
Minor procedure (skin) 17110 1,306

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 90 min in_clinic 180.00 EUR
Minor procedure (skin) 60 min in_clinic 450.00 EUR

Office, team & in practice

Gary Mackenzie
HEADSHOT
Gary Mackenzie in consultation
IN OFFICE
Gary Mackenzie with the team
WITH TEAM
Gary Mackenzie at a conference
CONFERENCE

Videos

introduction · 63s
Meet Gary Mackenzie

Research & publications

h-index: 17 · i10: 6

  1. Validation of clinical scoring in Gastroenterology
    Gary Mackenzie, et al. · European Journal of Medicine, 2026
    DOI: 10.9966/euroclin.2026.0 · PMID: 35433074 · cited by 171
  2. Long-term follow-up of Gastroenterology across GB
    Gary Mackenzie, et al. · European Journal of Medicine, 2025
    DOI: 10.4854/euroclin.2025.1 · PMID: 37356204 · cited by 89

Invited talks

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

Awards & memberships

Awards

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

Society memberships

  • WONCA Europe — Family Doctors — Member · Since 2022
  • national college of family doctors — Member · Since 2022
  • European Union of Medical Specialists (UEMS) — Member · Since 2022

Articles by this doctor

  • Patient education Patient guide to Gastroenterology
  • Awareness When should you see a gastroenterology?

For international patients

Coordinator
Patient liaison · dr.gary.mackenzie@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 Gary Mackenzie's Areas of Specialty

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

Gastroenterology

Digestive-tract conditions including reflux, IBS, IBD, liver disease and colorectal screening.

Dr Gary Mackenzie is one of 792 gastroenterology doctors indexed in United Kingdom. Browse gastroenterology doctors in United Kingdom →

LOCAL CARE CONTEXT

Why local healthcare in Horley 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 Horley 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 Horley 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 Gary Mackenzie specialise in?

    Gary Mackenzie specialises in Gastroenterology in Horley, GB. 29 years of clinical experience.

  • What conditions does Gary Mackenzie treat?

    Gary Mackenzie treats conditions within Gastroenterology. View the full conditions-treated list on the profile.

  • Where does Gary Mackenzie practise?

    Gary Mackenzie practises in Horley, GB. The profile page lists all practice addresses, phone numbers, and clinic affiliations.

  • What languages does Gary Mackenzie speak?

    Gary Mackenzie speaks English.

  • How do I book an appointment with Gary Mackenzie?

    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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