| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.7 / 5 (438 reviews) | Barcelona, Spain | 29+ years23,000+ treatments | Radioiodine therapy using radioactive iodine‑131 | Hyperthyroidism treatment | JCI-accredited clinic with specialized endocrinologists. Offers comprehensive pre-therapy evaluations and isolation protocols. Doctors have performed 900+ procedures. | Joint Commission International , European Foundation for Quality Management | ||
| #2 | 4.6 / 5 (16 reviews) | Madrid, Spain | — | 26,000+ treatments | Brain MRI, Biopsy | — | — | European Foundation for Quality Management, TÜV AG Сompany Research & Investing Certificate | |
| #3 | 5.0 / 5 (6 reviews) | Pamplona, Spain | — | Online Consultation with Oncologist, PET/CT | — | — | Joint Commission International , European Society for Medical Oncology | ||
| #4 | 4.0 / 5 (0 reviews) | Madrid, Spain | — | — | Radioiodine therapy, Consultation with a neurosurgeon | — | — | — |