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Dr Jonathan Katz

Verified Endocrinology Diabetes Bushey

Dr Jonathan Katz

6 years of experience 5.0 (32 verified reviews)

4,377+
Patients seen
6
Years in practice
5
Publications
1
Languages spoken

PROFILE SUMMARY

About Dr Jonathan Katz at a glance

Dr Jonathan Katz is an Endocrinology Diabetes practitioner based in Bushey, United Kingdom, practising at Universidad de Sevilla Teaching Hospital. They have 35+ years of clinical experience. Procedures focus on gp consultation, annual physical exam, vaccination administration, minor procedure (skin). Educated at Universidad de Sevilla (MD, 2016). Serves patients in Bushey, United Kingdom and the surrounding area.

About

Dr Jonathan Katz is a Consultant in Diabetes & Endocrinology, based at Barnet Hospital, which is part of the The Royal Free London NHS Trust. He has over 30 years experience in treating patients with Thyroid problems, Pituitary disorders, Diabetes and other hormone imbalances including Calcium disorders, Menopause, Testosterone Deficiency and Addison's Disease.

Dr Katz studied medicine at Cambridge University and University College London, qualifying in 1991. He specialised in Endocrinology, completing registrar training at UCLH, the Whittington Hospital and the Royal Free Hospital. During higher training he undertook a two year research fellowship for his MD thesis on polycystic ovary syndrome. Following that,  he worked for 1 year as a registrar in Sydney, Australia before returning to teh Royal Free Hospital for his final resgistrar year. Dr Katz was appointed as a Consultant in Diabetes and Endocrinology in 2002.

Dr Katz works as a Consultant Endocrinologist for the Royal Free London NHS Foundation Trust, based at Barnet Hospital. In 2009, he was elected as a Fellow of the Royal College of Physicians (FRCP), an honour granted to consultants providing the highest standards of care. In 2019, Dr Katz was appointed as Regional Advisor for the Royal College of Physicians – this is an elected post with wider responsibilities : supporting training, ensuring new consultant posts fulfil Royal College standards, chairing regional conference updates for physicians and appointing College Tutors.

Dr Katz has a busy NHS Endocrinology practice, seeing over 300 new patients and over 1000 follow-up patients each year. In addition, he looks after inpatients at Barnet Hospital with diabetes emergencies and acute endocrine disorders.

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

— Dr Jonathan Katz

Education & training

  1. 2010–2016 MD · Medicine and Surgery
    Universidad de Sevilla, Bushey (GB)
  2. 2016–2020 Residency · Endocrinology Diabetes
    Universitat de València, Bushey (GB)

Career & appointments

  1. 2020-09–2021-08 Junior consultant
    Universidad de Sevilla Teaching Hospital — Endocrinology Diabetes

Licenses & insurance

Medical licenses

GB — Organización Médica Colegial de España (OMC)
#GB-914870 active · expires 2028-12-31

Board certifications

European Board of Endocrinology Diabetes
#EB-DEE62282 · issued 2021 · renewal 2031
Malpractice insurance: Generali Healthcare · 5,000,000 EUR coverage · No claims on file

Procedures performed

ProcedureCodeLifetime count
GP consultation 99213 1,109
Annual physical exam 99395 1,451
Vaccination administration 90471 787
Minor procedure (skin) 17110 2,260

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 360.00 EUR
Minor procedure (skin) 120 min in_clinic 270.00 EUR

Office, team & in practice

Jonathan Katz
HEADSHOT
Jonathan Katz in consultation
IN OFFICE
Jonathan Katz with the team
WITH TEAM
Jonathan Katz at a conference
CONFERENCE

Videos

introduction · 106s
Meet Jonathan Katz

Research & publications

h-index: 18 · i10: 13

  1. Validation of clinical scoring in Endocrinology Diabetes
    Jonathan Katz, et al. · European Journal of Medicine, 2026
    DOI: 10.4684/euroclin.2026.0 · PMID: 32227310 · cited by 141
  2. Long-term follow-up of Endocrinology Diabetes across GB
    Jonathan Katz, et al. · European Journal of Medicine, 2025
    DOI: 10.7599/euroclin.2025.1 · PMID: 32293834 · cited by 183
  3. Validation of clinical scoring in Endocrinology Diabetes
    Jonathan Katz, et al. · European Journal of Medicine, 2024
    DOI: 10.6221/euroclin.2024.2 · PMID: 38323570 · cited by 121
  4. Long-term follow-up of Endocrinology Diabetes across GB
    Jonathan Katz, et al. · European Journal of Medicine, 2023
    DOI: 10.5395/euroclin.2023.3 · PMID: 31712557 · cited by 67

Invited talks

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

Awards & memberships

Awards

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

Society memberships

  • WONCA Europe — Family Doctors — Member · Since 2021
  • national college of family doctors — Member · Since 2021
  • European Union of Medical Specialists (UEMS) — Member · Since 2021

Articles by this doctor

  • Patient education Patient guide to Endocrinology Diabetes
  • Awareness When should you see a endocrinology diabetes?

For international patients

Coordinator
Patient liaison · dr.jonathan.katz@euroclinics.example
Accepted international insurance
Allianz Worldwide · AXA Global · BUPA Global · Cigna Global

Location

1 tag

Patient reviews

32 verified reviews
5.00
★★★★★
32 reviews
5★ 2
4★ 1
3★ 0
2★ 0
1★ 0
Bedside Manner
5.0
Knowledge
5.0
Wait Time
4.8
Staff Friendliness
5.0
Ease Of Appointment
4.9
Value For Money
4.9
Would Recommend Pct
99.0
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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 Jonathan Katz's Areas of Specialty

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

Endocrinology Diabetes

Dr Jonathan Katz is one of 324 endocrinology diabetes doctors indexed in United Kingdom. Browse endocrinology diabetes 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 Jonathan Katz specialise in?

    Jonathan Katz specialises in Endocrinology Diabetes in Bushey, GB. 35 years of clinical experience.

  • What conditions does Jonathan Katz treat?

    Jonathan Katz treats conditions within Endocrinology Diabetes. View the full conditions-treated list on the profile.

  • Where does Jonathan Katz practise?

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

  • What languages does Jonathan Katz speak?

    Jonathan Katz speaks English.

  • How do I book an appointment with Jonathan Katz?

    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 Jonathan Katz?

    Jonathan Katz has a verified rating of 5/5 from 32 patient reviews. Read the most recent reviews on the profile page.

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