| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.7 / 5 (441 reviews) | Barcelona, Spain | — | 23,000+ treatments | Thyroidectomy, Radioiodine therapy | — | — | Joint Commission International , European Foundation for Quality Management | |
| #2 | 4.7 / 5 (359 reviews) | Istanbul, Turkey | — | — | Diabetes mellitus treatment with stem cells, Radioiodine therapy | — | — | International Organization for Standardization, Joint Commission International | |
| #3 | 4.6 / 5 (214 reviews) | Istanbul, Turkey | 27+ years | Radioiodine therapy, Thyroidectomy | — | — | Joint Commission International , Turkish Medical Association (Türk Tabıplerı Bırliği) | ||
| #4 | 4.6 / 5 (514 reviews) | Istanbul, Turkey | — | — | Radioiodine therapy, Thyroidectomy | — | — | Planetree's Gold Certificate, International Accreditation System for Interventional Oncology Services (IASIOS) | |
| #5 | 4.7 / 5 (140 reviews) | Vilnius, Lithuania | 28+ years | Thyroidectomy, Consultation with an endocrinologist | — | — | Joint Commission International | ||
| #6 | 4.6 / 5 (473 reviews) | Istanbul, Turkey | — | — | Radioiodine therapy, Thyroidectomy | — | — | Joint Commission International , Patient choice in Pediatric Oncology & Hematology Oncology | |
| #7 | 4.9 / 5 (46 reviews) | Milan, Italy | — | 8,000+ treatments | Consultation with an endocrinologist | — | — | Scientific Institute for Research and Healthcare Accrediatation, World's Best Hospitals 2021 by Newsweek | |
| #8 | 4.7 / 5 (155 reviews) | Vienna, Austria | — | — | Consultation with an endocrinologist | — | — | International Organization for Standardization, World's Best Hospitals 2021 by Newsweek | |
| #9 | 4.8 / 5 (180 reviews) | Istanbul, Turkey | 37+ years | Metabolic surgery, Thyroidectomy | — | — | Certification according to DIN EN ISO 9001 by TÜV NORD CERT, Joint Commission International | ||
| #10 | 4.6 / 5 (127 reviews) | Antalya , Turkey | — | — | Thyroidectomy, Consultation with an endocrinologist | — | — | Joint Commission International |