| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.7 / 5 (485) | Barcelona, Spain | 28+ years23,000+ treatments | Resection of large intestine, Consultation with creation of treatment plan | — | — | Joint Commission International , European Foundation for Quality Management | ||
| #2 | 5.0 / 5 | Madrid, Spain | 18+ years | Resection of large intestine | — | — | ISO 45001 (Occupational Health and Safety Management), World's Best Smart Hospitals 2023 by Newsweek | ||
| #3 | 3.8 / 5 (6) | Madrid, Spain | — | Consultation with a neurosurgeon, PET/CT | — | — | World's Best Hospitals 2021 by Newsweek | ||
| #4 | 5.0 / 5 (1) | Madrid, Spain | 76+ years | Resection of large intestine | — | — | Joint Commission International , International Organization for Standardization | ||
| #5 | 4.7 / 5 (7) | Pamplona, Spain | — | — | Consultation with an oncologist, Online Consultation with Oncologist | — | — | Joint Commission International , European Society for Medical Oncology | |
| #6 | 4.6 / 5 (5) | Barcelona, Spain | — | — | Resection of large intestine | — | — | European Foundation for Quality Management, Certification according to DIN EN ISO 9001 by TÜV NORD CERT | |
| #7 | 3.3 / 5 | Alicante, Spain | — | — | CT (computer tomography), Consultation with an oncologist | — | — | International Organization for Standardization | |
| #8 | 3.2 / 5 | Alicante, Spain | — | — | Mammography, MRI of one area | — | — | International Organization for Standardization |