| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.5 / 5 (23) | Seoul, Republic of Korea | — | 45,000+ treatments | Radioiodine therapy, Thyroid resection | — | — | International Organization for Standardization, Korean Institute for Healthcare Accreditation | |
| #2 | 4.9 / 5 (7) | Seoul, Republic of Korea | — | 32,000+ treatments | Thyroidectomy, Craniotomy | — | — | Global Healthcare Accreditation Program, World's Best Hospitals 2021 by Newsweek | |
| #3 | 4.5 / 5 (7) | Seoul, Republic of Korea | — | 65,000+ treatments | Thyroid resection , Cryodestruction | — | — | International Organization for Standardization, Korean Institute for Healthcare Accreditation | |
| #4 | 4.5 / 5 (43) | Seoul, Republic of Korea | — | — | Chemoembolization of the liver, Colectomy (large bowel resection) | — | — | Joint Commission International , Korean Institute for Healthcare Accreditation | |
| #5 | 3.6 / 5 | Goyang, Republic of Korea | — | — | Craniotomy, Chemotherapy | — | — | Advanced Regenerative Medicine Implementation Institution (Ministry of Health and Welfare, Republic of Korea) |