There really is no such thing, at least in my state, as a Gender Therapist. There is a criteria by which a psychologist may call him or herself a sex therapist. It is taking a certain number of continuing credit hours. On the other hand, there are more than a few unlicensed, unqualified people who call themselves sexologists who do not have adequate training. The best way to find a psychologist is by word of mouth and reputation. Also, you are allowed to interview the psychologist. My suggestion is to ask if they are a member of The World Professional Association for Transgender Health, WPATH formerly known as the (Harry Benjamin International Gender Dysphoria Association, Inc.) Ask the person you are thinking of choosing as a therapist if they are licensed, what degree they have and you should even ask what their opinion is regarding both gender identity formation and orientation are. Also ask what the therapist's clinical orientation is. Someone who is strictly cognitive behavioral might be helpful if you are trying to work through a phobia, but might not be as qualified or skillful helping you work through the relationship and identity issues in deciding to transition. Also, it might take a couple of sessions to get a feel for whether you and a therapist make a good fit. You are the only one who can decide if you are comfortable. On the other hand, forming relationships is not always easy, even a professional therapeutic relationship. There is real value in the therapy process once you find a psychologist who you feel you can work with.