Len, Tiffany, my go to for finding this is our Local Places (https://transgenderheaven.com/local-places/). It doesn’t have everything listed, but there are thousands of places listed there. And web searches are a treasure trove. And if you want, let me know and I’ll try to help you find something.
As for criteria, the guidance from WPATH and your state’s laws would govern what letters you need for what.
As for cost, my BA was $7.5K when I had it done last October. My orchiectomy was similar in cost, but that was 3 years ago…..
I do have a question on the insurance. You mentioned Medicare, which is for retired folks. So I was wondering how you fit on that. But what I have seen is that a lot of doctors either require private insurance or out of pocket. Probably not all, but I have heard of enough of them to assume that it is probably more common.
I hope that helps, if just a little bit. Hugs, Michelle