In Seattle, there’s the Bird and Exotic Animal Clinic (on Aurora) which I took my chameleon to. Dr. Lewis there seemed to know what she was talking about when I took my chameleon in for a physical exam a few months ago. The other vets probably also know what they are talking about, but I have never had experience with them, so I can't speak to that. If you were to ever go there though, just call beforehand to make sure they are open lol because they may have some weird hours.