Hi!!!
Apologies for not getting back sooner, I've been in kind of a funk lately.
I used Dr Z for FFS. The first step is a consult. Do what you feel you need to do, not necessarily what Dr Z wants to do. I will say that he is an interesting person and he may try to over sell. However, he is an artist with the face, and arguably, he is the best.
Once you two agree, he will come up with a total bill. His office needs to send that into your insurance company for pre-approval. When he does that, you need to send your two psych letters, the letter from your primary and you may need to book GCS or at least communicate that you are looking for a good doctor. Communicate by asking your insurance which doctor is in network who performs GCS. Give them some options. If you have to book, there are several out there who will give you the letter you need.
Then you wait for pre-approval. After four weeks, if you don't hear anything, start to call every couple of days. Eventually, the insurance company will say yes or no. If it's no, post again and I'll help with the appeal process.
Good luck!!!!!
Hugs, Jen