| Turkey | Austria | Spain | |
| Stomach resection | from $16,470 | from $22,000 | from $9,000 |
| Stomach cancer surgery | from $22,320 | from $30,000 | from $25,000 |
| Radiation therapy for colorectal cancer | from $7,000 | from $12,000 | from $10,000 |
| Chemotherapy for breast cancer | from $1,200 | from $15,000 | from $3,500 |
Over 44 years of experience shaping oncology globally – Prof. Zielinski leads personalized cancer therapy at Wiener Privatklinik's International Oncology Center.
Professor Köstler is a medical oncologist specializing in personalized, targeted cancer therapies. He works at the renowned Wiener Privatklinik and the Medical University of Vienna.
The doctor completed medical studies at the University of Vienna in 1998, with training at UCLA and the University of Pennsylvania. From 2000 to 2006, the doctor trained as a specialist in internal medicine at Vienna General Hospital, followed by additional specialization in gastroenterology and hepatology from 2006 to 2008, and internal intensive care medicine from 2008 to 2010.
The doctor established and managed the hepatic hemodynamics laboratory and the outpatient clinic for cirrhosis at the Medical University of Vienna in 2003. Since 2018, the doctor has been head of the Department for Internal Medicine I at the Hospital of the Barmherzigen Brüder Vienna.