| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.6 / 5 (175) | Vienna, Austria | 44+ years | Consultation with an oncologist | — | — | World's Best Hospitals 2021 by Newsweek, International Organization for Standardization | ||
| #2 | 4.6 / 5 | Vienna, Austria | 26+ years | External beam radiotherapy, IMRT, VMAT, IGRT | Patients who have had unsuccessful colon cancer treatment elsewhere | Uses Elekta Versa HD radiotherapy with IMRT/VMAT/IGRT for precise colon cancer targeting. Every case is reviewed by a multidisciplinary tumor board. Doctor specializes in gastrointestinal cancers. | World's Best Hospitals 2026 by Newsweek | ||
| #3 | 4.2 / 5 (21) | Vienna, Austria | 26+ years | ECG | — | — | International Organization for Standardization |