I'm curious if anyone has ever filed a formal complaint against any healthcare provider (nurse, doctor, psychiatrist, etc.). If so, why did you file the complaint, where did you file the complaint (the hospital, their professional College), and what happened? 

I see a lot of posts about receiving objectively terrible treatment but haven't seen anyone mentioning repercussions for the provider. 

Also, definitely not promoting filing complaints willy-nilly. I work in healthcare and have seen some bogus complaints really derail people's careers.