| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.7 / 5 (154 reviews) | Vienna, Austria | 44+ years | Chemotherapy | — | — | International Organization for Standardization, World's Best Hospitals 2021 by Newsweek | ||
| #2 | 3.8 / 5 (8 reviews) | Vienna, Austria | — | Chemotherapy, Сomplex oncology diagnostic | — | — | — | ||
| #3 | 4.3 / 5 (20 reviews) | Vienna, Austria | 26+ years | — | — | — | International Organization for Standardization | ||
| #4 | 4.5 / 5 (19 reviews) | Vienna, Austria | 25+ years | — | — | — | International Organization for Standardization | ||
| #5 | 3.9 / 5 (0 reviews) | Vienna, Austria | — | — | — | — | — | — |