| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 3.8 / 5 (6 reviews) | Madrid, Spain | — | Chemotherapy, targeted therapy, immunotherapy, bone marrow transplant | Leukemia with Noonan Syndrome | Led by Dr. Luis Madero, a globally recognized pediatric oncologist with 37 years of experience and 1,100 treatments performed. Offers personalized chemotherapy plans and access to latest clinical trials. | World's Best Hospitals 2021 by Newsweek | ||
| #2 | 4.5 / 5 (0 reviews) | Madrid, Spain | — | — | Leukemia chemotherapy | — | — | Joint Commission International , International Organization for Standardization | |
| #3 | 4.6 / 5 (16 reviews) | Madrid, Spain | 31+ years26,000+ treatments | MRI of one area, Extended analysis of blood | — | — | European Foundation for Quality Management, TÜV AG Сompany Research & Investing Certificate |