| Rank | Clinic Name | Patient Rating | Country | Lead Doctor | experience | Techniques | Best For | Why It’s Ranked | Accreditations |
|---|---|---|---|---|---|---|---|---|---|
| #1 | 2.6 / 5 | Dusseldorf, Germany | — | — | Herniated disc surgery, Brain tumor removal | — | — | International Accreditation System for Interventional Oncology Services (IASIOS), German Cancer Society | |
| #2 | — / 5 | Krefeld, Germany | — | — | Gamma Knife | — | — | ISO 9001:2015 Quality management systems |