Accepting new patients
Doç. Dr.
Dr Jonathan Katz
Endocrinology & Diabetes
- 🇬🇧
- GP consultation
- Annual physical exam
- Vaccination administration
- Minor procedure (skin)
About Dr Jonathan Katz
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."
Credentials & verification
Medical license
Organización Médica Colegial de España (OMC) · GB
#GB-914870
Valid until 2028-12-31
Verify with issuerBoard certification
European Board of Endocrinology & Diabetes
#EB-DEE62282
Renewal due 2031
Verify with issuerMalpractice cover
Generali Healthcare
5,000,000 EUR
Valid until 2026-12-31
No claims on file
Education & training
-
2010–2016
MD · Medicine and Surgery
Universidad de Sevilla (GB)
-
2016–2020
Residency · Endocrinology & Diabetes
Universitat de València (GB)
Career & appointments
-
2020-09–2021-08
Junior consultant
Universidad de Sevilla Teaching Hospital — Endocrinology & Diabetes
Procedures & conditions
| Procedure | Code | Lifetime volume |
|---|---|---|
| GP consultation | 99213 |
1,109 |
| Annual physical exam | 99395 |
1,451 |
| Vaccination administration | 90471 |
787 |
| Minor procedure (skin) | 17110 |
2,260 |
Patient reviews
See all 32"Very thorough first visit — explained every step. Booking was easy and the staff were welcoming."
"Took time to listen and reviewed all my previous results. I would absolutely recommend."
"Professional and knowledgeable. Wait on the day was a bit long, otherwise excellent."
Recognition & press
Awards
- Top-rated Endocrinology & Diabetes — — 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
Your consultation, step by step
- 1 Choose a slot
- 2 Brief pre-consult form
- 3 Consultation
- 4 Follow-up note & plan
Services & pricing
New patient consultation (60m)
Follow-up consultation (30m)
Vaccination administration
Minor procedure (skin)
Insurance compatibility
For international patients
Multilingual care
Coordinator: Patient liaison · dr.jonathan.katz@euroclinics.example. Care delivered in English.
Travel & transfer
Aftercare worldwide
Coordinated follow-up by request.
Research & publications
h-index: 18 · i10: 13
Selected publications
-
Validation of clinical scoring in Endocrinology & Diabetes
DOI: 10.4684/euroclin.2026.0 · cited by 141
-
Long-term follow-up of Endocrinology & Diabetes across GB
DOI: 10.7599/euroclin.2025.1 · cited by 183
-
Validation of clinical scoring in Endocrinology & Diabetes
DOI: 10.6221/euroclin.2024.2 · cited by 121
Show full research record
Additional publications
-
Long-term follow-up of Endocrinology & Diabetes across GB
Invited talks
- Practical updates in Endocrinology & Diabetes · European Annual Congress (Endocrinology & Diabetes) · Vienna · 2024
- Single-centre experience in Endocrinology & Diabetes · National Society Meeting · · 2023
Articles by Dr Jonathan Katz
Frequently asked
01. Do you accept new patients?
Dr Jonathan Katz is currently accepting new patients. Use the booking module to choose a slot.
02. Which languages can I be seen in?
Consultations are available in English.
03. Is the consultation in-person or online?
Most services are offered both in-clinic and via telemedicine. Each service card above marks its modalities.
04. Do you accept my insurance?
In-network with major international insurers (Allianz Worldwide, AXA Global, BUPA Global and others). Use the "Verify my insurance" button to confirm your plan.
05. What is the cancellation policy?
Free cancellation up to 24 hours before your slot. Last-minute cancellations may incur a small administrative fee.
06. How is my health data protected?
All records are stored on EU servers, field-level encrypted, and GDPR compliant. Data is never shared with third parties without your explicit consent.
Book Dr Jonathan Katz
Similar Endocrinology & Diabetes specialists
Other verified specialists you may want to compare.