| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.6 / 5 (0 reviews) | Madrid, Spain | 32+ years | Proton therapy for breast cancer | — | — | Joint Commission International , European Society for Medical Oncology | ||
| #2 | 3.8 / 5 (6 reviews) | Madrid, Spain | — | Brain MRI, Consultation with a neurosurgeon | — | — | World's Best Hospitals 2021 by Newsweek | ||
| #3 | 5.0 / 5 (6 reviews) | Pamplona, Spain | — | — | Online Consultation with Oncologist, PET/CT | — | — | Joint Commission International , European Society for Medical Oncology | |
| #4 | 4.0 / 5 (0 reviews) | Madrid, Spain | — | — | Proton therapy for breast cancer, Consultation with a neurosurgeon | — | — | — |