| 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 | Chemotherapy for lung cancer, MRI of one area | — | — | International Organization for Standardization, Korean Institute for Healthcare Accreditation | ||
| #2 | 5.0 / 5 (9) | Seoul, Republic of Korea | 47+ years | Biopsy, Mammography | — | — | Joint Commission International , Korean Institute for Healthcare Accreditation | ||
| #3 | 4.8 / 5 (6) | Seoul, Republic of Korea | — | 32,000+ treatments | PET/CT, Colonoscopy | — | — | Global Healthcare Accreditation Program, World's Best Hospitals 2021 by Newsweek | |
| #4 | 4.5 / 5 (7) | Seoul, Republic of Korea | — | 65,000+ treatments | Consultation with a neurosurgeon, Testicular Biopsy | — | — | International Organization for Standardization, Korean Institute for Healthcare Accreditation | |
| #5 | 4.5 / 5 (43) | Seoul, Republic of Korea | — | Chemotherapy for lung cancer, PET/CT | — | — | Joint Commission International , Korean Institute for Healthcare Accreditation | ||
| #6 | 5.0 / 5 (2) | Seoul, Republic of Korea | — | — | Chemotherapy for lung cancer, CT (computer tomography) | — | — | World's Best Hospitals 2021 by Newsweek | |
| #7 | 5.0 / 5 (1) | Seoul, Republic of Korea | — | Brain MRI, PET/CT | — | — | World's Best Hospitals 2021 by Newsweek, World's Best Smart Hospitals 2021 by Newsweek |