I made a complaint, and I'm very glad I did. Because my ex T had "retired", the board had no course of action, but said that the information would be kept on file in case she reapplied at any point. I wrote about seven versions, but ended up sending mostly a list of facts both about what happened, and about how it impacted me. I got a very supportive answer from the board.

In my state, the complaint form is on the Board of Medicine's website.