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Dr Ratnasingam Nithiyananthan
Trust score 8/100

Dr Ratnasingam Nithiyananthan

Endocrinology Diabetes · Ashtead, Surrey

👤 13 years of experience

6,720+ Patients seen
13 Years in practice
7 Publications
2 Languages spoken

PROFILE SUMMARY

About Dr Ratnasingam Nithiyananthan at a glance

Dr Ratnasingam Nithiyananthan is an Endocrinology Diabetes practitioner based in Ashtead, Surrey, United Kingdom, practising at Universidad Complutense de Madrid Teaching Hospital. They have 33+ years of clinical experience. Procedures focus on gp consultation, annual physical exam, vaccination administration, minor procedure (skin). Educated at Universidad Complutense de Madrid (MD, 2009). Serves patients in Ashtead, Surrey, United Kingdom and the surrounding area.

VERIFIED PHYSICIAN PROFILE · UPDATED MAY 2026

About

Clinical Interests:

Diabetes, endocrinology, general medicine, polycystic ovarian syndrome, thyroid disease, obesity and metabolism, parathyroid disease and calcium metabolism, hypertension, pituitary disease and hypogonadism.

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

— Dr Ratnasingam Nithiyananthan

Education & training

  1. 2003–2009 MD · Medicine and Surgery
    Universidad Complutense de Madrid, Ashtead, Surrey (GB)
  2. 2009–2013 Residency · Endocrinology Diabetes
    Universitat de València, Ashtead, Surrey (GB)

Career & appointments

  1. 2013-09–2014-08 Junior consultant
    Universidad Complutense de Madrid Teaching Hospital — Endocrinology Diabetes

Licenses & insurance

Medical licenses

GB — Organización Médica Colegial de España (OMC)
#GB-319009 active · expires 2028-12-31

Board certifications

European Board of Endocrinology Diabetes
#EB-2048F0B2 · issued 2014 · renewal 2024
Malpractice insurance: AmTrust Europe · 1,000,000 EUR coverage · No claims on file

Procedures performed

ProcedureCodeLifetime count
GP consultation 99213 1,344
Annual physical exam 99395 2,710
Vaccination administration 90471 230
Minor procedure (skin) 17110 1,481

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 270.00 EUR
Minor procedure (skin) 60 min in_clinic 360.00 EUR

Office, team & in practice

Ratnasingam Nithiyananthan
HEADSHOT
Ratnasingam Nithiyananthan in consultation
IN OFFICE
Ratnasingam Nithiyananthan with the team
WITH TEAM
Ratnasingam Nithiyananthan at a conference
CONFERENCE

Videos

introduction · 123s
Meet Ratnasingam Nithiyananthan

Research & publications

h-index: 10 · i10: 11

  1. Validation of clinical scoring in Endocrinology Diabetes
    Ratnasingam Nithiyananthan, et al. · European Journal of Medicine, 2026
    DOI: 10.7671/euroclin.2026.0 · PMID: 33252926 · cited by 24
  2. Long-term follow-up of Endocrinology Diabetes across GB
    Ratnasingam Nithiyananthan, et al. · European Journal of Medicine, 2025
    DOI: 10.3527/euroclin.2025.1 · PMID: 35218622 · cited by 82
  3. Validation of clinical scoring in Endocrinology Diabetes
    Ratnasingam Nithiyananthan, et al. · European Journal of Medicine, 2024
    DOI: 10.1663/euroclin.2024.2 · PMID: 33882753 · cited by 172

Invited talks

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

Awards & memberships

Awards

  • 🏆 Top-rated Endocrinology Diabetes — Ashtead, Surrey · EuroClinics Patient Choice · 2025 · regional

Society memberships

  • WONCA Europe — Family Doctors — Member · Since 2014
  • national college of family doctors — Member · Since 2014
  • European Union of Medical Specialists (UEMS) — Member · Since 2014

Articles by this doctor

  • Patient education Patient guide to Endocrinology Diabetes 2026-03-10 · 9 min read
  • Awareness When should you see a endocrinology diabetes? 2026-01-08 · 8 min read

For international patients

Coordinator
Patient liaison · ratnasingam.nithiyananthan@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 Ratnasingam Nithiyananthan's Areas of Specialty

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

Endocrinology Diabetes

Dr Ratnasingam Nithiyananthan 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 Ashtead, Surrey 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 Ashtead, Surrey 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 Ashtead, Surrey 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 Ratnasingam Nithiyananthan specialise in?

    Ratnasingam Nithiyananthan specialises in Endocrinology Diabetes in Ashtead, Surrey, GB. 33 years of clinical experience.

  • What conditions does Ratnasingam Nithiyananthan treat?

    Ratnasingam Nithiyananthan treats conditions within Endocrinology Diabetes. View the full conditions-treated list on the profile.

  • Where does Ratnasingam Nithiyananthan practise?

    Ratnasingam Nithiyananthan practises in Ashtead, Surrey, GB. The profile page lists all practice addresses, phone numbers, and clinic affiliations.

  • What languages does Ratnasingam Nithiyananthan speak?

    Ratnasingam Nithiyananthan speaks English, Tamil.

  • How do I book an appointment with Ratnasingam Nithiyananthan?

    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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