I went to MD Anderson in Houston. I personally hated them but they are good and have very good experienced jpouch surgeons. Getting in is a royal pain in the arse though.
Most doctors don't see people on weekends, there are some out there though. If you can go into a urgent care and ask for a script, some might if you can convince them you need it. I did that for a bladder issue once in some small town when passing by.