Döbling Private Hospital
| Turkey | Austria | Spain | |
| Radiation therapy for colorectal cancer | from $7,000 | from $12,000 | from $10,000 |
| Radiation Therapy for Sarcomas | from $3,250 | from $18,000 | from $8,000 |
| Proton-beam therapy | from $70,000 | from $80,000 | from $25,297 |
| Proton therapy for prostate cancer | from $30,000 | from $80,000 | from $70,000 |
| Proton therapy for breast cancer | from $30,000 | from $55,000 | from $85,000 |
Prof. Köstler is a distinguished medical oncologist specializing in targeted therapies, with over _doctor_1748_years_ of experience in breast and gynecologic cancers at Wiener Privatklinik.