Dear Emily-G,
I don't have enough posts yet to send PMs, but I can tell you that the endo I used did require a letter from a licensed therapist or psychiatrist that addressed the WPATH guidelines for administering hormones. So if you have been to a therapist, and can get a letter, then you can proceed to the next step. The therapists I've seen all had recommendations for endos. I don't know if we can give out names for therapists here, so just google therapist and transgender. Some like the ones on Kirby, are very expensive but very experienced, and others like ones on Old Katy Road or Bellaire will work on a sliding scale. It seems that most people have to been in contact with a therapist for a year before they can get a letter, unless they are presenting as a member of the opposite sex. My therapist used medical codings for insurance that kept me under the radar for my insurance, and the endo I used on 20th off Yale in the Heights did the same coding so the prescription didn't raise any flags.
I wondered if I would get any comments from the pharmacists when I went to drop off my script - it was a non-event! They took the script, filled it, and off I went!
As soon as I get enough posts to send PMs I will give you more specifics.