| 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 | CyberKnife for brain tumor, CyberKnife | — | — | Joint Commission International , European Foundation for Quality Management | |
| #2 | 4.8 / 5 (41 reviews) | Barcelona, Spain | 14,000+ treatments | Autologous bone marrow transplantation, Allogenic bone marrow transplantation from a related donor | — | — | Bookimed Award: Best pediatric hospital, World's Best Specialized Hospitals 2022 by Newsweek | ||
| #3 | 3.8 / 5 (6 reviews) | Madrid, Spain | — | — | Bone marrow transplantation, Allogenic bone marrow transplantation from an unrelated donor | — | — | World's Best Hospitals 2021 by Newsweek | |
| #4 | 2.5 / 5 (0 reviews) | Madrid, Spain | — | — | Consultation with a hematologist | — | — | European Foundation for Quality Management, Certification according to DIN EN ISO 9001 by TÜV NORD CERT | |
| #5 | 5.0 / 5 (6 reviews) | Pamplona, Spain | — | — | Sarcoma surgery, CAR T-cell therapy | — | — | Joint Commission International , European Society for Medical Oncology | |
| #6 | 4.6 / 5 (5 reviews) | Barcelona, Spain | — | — | Consultation with a hematologist | — | — | European Foundation for Quality Management, Certification according to DIN EN ISO 9001 by TÜV NORD CERT |