I have done medicated TI at co.oper. I have seen Che.ck, Co.hen and Ch.oe all at some point. Che.ck was my initial consult and has my case. I would recommend seeing him at least at first, since he is the expert on his protocol for high fsh. However, he does talk a lot about studies (essentially when answering a question, he is supporting his answer with a study) and it can be overwhelming - but i felt that i trusted his knowledge in the end. I thought Dr. co.hen was good and very thorough, and answered my questions.