I had gone to so many doctors. Spends tens of thousands. No one could diagnose me. He diagnose me in 2 sessions. One to write the tests and one to give me the diagnoses and prescription. This man is extremely knowledgeable and good at his job. If you have lost hope, go to him. He's very professional, polite and fluent in English. He explains everything so well and simple and his approach to treatment is very holistic. I'm so so thankful that my gynecologist recommend him to me after failing a diagnosis. I'm forever in debt to Dr. Gökhan.