| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.5 / 5 (0 reviews) | Madrid, Spain | — | — | Breast biopsy | — | — | Joint Commission International , International Organization for Standardization | |
| #2 | 4.7 / 5 (441 reviews) | Barcelona, Spain | 76+ years23,000+ treatments | Radiotherapy for uterine cancer, Immunotherapy for prostate cancer | — | — | Joint Commission International , European Foundation for Quality Management | ||
| #3 | 3.8 / 5 (6 reviews) | Madrid, Spain | 76+ years | Transurethral resection of the prostate (TURP), Removal of liver cancer | — | — | World's Best Hospitals 2021 by Newsweek | ||
| #4 | 4.6 / 5 (16 reviews) | Madrid, Spain | — | 26,000+ treatments | Radiosurgery of a brain tumor, Chemotherapy for ovarian cancer | — | — | European Foundation for Quality Management, TÜV AG Сompany Research & Investing Certificate | |
| #5 | 5.0 / 5 (6 reviews) | Pamplona, Spain | — | — | Craniotomy, Allogenic bone marrow transplantation from an unrelated donor | — | — | Joint Commission International , European Society for Medical Oncology | |
| #6 | 4.6 / 5 (5 reviews) | Barcelona, Spain | — | — | Breast biopsy | — | — | European Foundation for Quality Management, Certification according to DIN EN ISO 9001 by TÜV NORD CERT | |
| #7 | 3.3 / 5 (0 reviews) | Alicante, Spain | — | — | Nephrectomy, Thyroidectomy | — | — | International Organization for Standardization | |
| #8 | 3.2 / 5 (0 reviews) | Alicante, Spain | — | — | Lumpectomy , Childbirth | — | — | International Organization for Standardization | |
| #9 | 2.5 / 5 (0 reviews) | Madrid, Spain | 36+ years | Breast biopsy | — | — | European Foundation for Quality Management, Certification according to DIN EN ISO 9001 by TÜV NORD CERT |