| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 4.6 / 5 (130 reviews) | Hamburg, Germany | — | — | Gamma Knife for brain tumor, CyberKnife for brain tumor | — | — | International Organization for Standardization, Medical Travel Quality Alliance | |
| #2 | 4.0 / 5 (1 review) | Hamburg, Germany | — | — | Complex diagnostics of nephroblastoma | — | — | World's Best Hospitals 2021 by Newsweek | |
| #3 | 2.9 / 5 (0 reviews) | Bremen, Germany | — | — | Radiotherapy | — | — | Cooperation for transparency and quality in the health service , TOP German hospital according to 2019 Focus ranking |