| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.6 / 5 (542) | Istanbul, Turkey | — | — | Excision of skull base tumor, CyberKnife for brain tumor | — | — | Planetree's Gold Certificate, International Accreditation System for Interventional Oncology Services (IASIOS) | |
| #2 | 4.7 / 5 (493) | Barcelona, Spain | — | 23,000+ treatments | Brain tumor removal, Allogenic bone marrow transplantation from an unrelated donor | — | — | Joint Commission International , European Foundation for Quality Management | |
| #3 | 4.5 / 5 (171) | Tel Aviv, Israel | 38+ years34,000+ treatments | Chemotherapy | — | — | World's Best Smart Hospitals 2021 by Newsweek, World's Best Hospitals 2021 by Newsweek | ||
| #4 | 4.6 / 5 (432) | Istanbul, Turkey | — | — | Complex treatment of Ewing's sarcoma, Brain tumor removal | — | — | International Organization for Standardization, Joint Commission International | |
| #5 | 3.8 / 5 (6) | Madrid, Spain | — | — | Bone marrow transplantation, Allogenic bone marrow transplantation from a related donor | — | — | World's Best Hospitals 2021 by Newsweek | |
| #6 | 4.7 / 5 (44) | Barcelona, Spain | 14,000+ treatments | Bone marrow transplantation, Sarcoma surgery | — | — | Bookimed Award: Best pediatric hospital, World's Best Specialized Hospitals 2022 by Newsweek | ||
| #7 | 4.4 / 5 (34) | Istanbul, Turkey | — | — | Radiation Therapy for Sarcomas, Allogenic bone marrow transplantation from an unrelated donor | — | — | International Organization for Standardization, Joint Commission International | |
| #8 | 5.0 / 5 (1) | Istanbul, Turkey | — | — | Sarcoma Immunotherapy | — | — | International Organization for Standardization, Joint Commission International | |
| #9 | 4.6 / 5 (131) | Bangkok, Thailand | — | — | Transnasal resection of tumor, Bone marrow transplantation | — | — | International Organization for Standardization, Joint Commission International | |
| #10 | 4.5 / 5 (57) | Frankfurt am Main, Germany | 36+ years | Chemotherapy, Brain tumor surgery | — | — | TÜV AG Сompany Research & Investing Certificate, TOP German hospital according to 2019 Focus ranking |