When I applied for my state psychotherapy license, a question on the application stated "Have you ever been treated for a mental illness or substance abuse?". If you mark yes, you have to send all kinds of waiver paperwork to the board, including treatment and releases from psychiatric assessments stating you are stable to provide healthcare. The disorders they worry about are the SPMI (Severe and Persistent Mental Illness), mostly schizophrenia and bipolar. There is still stigma, but I think licensing boards for professionals who put people's emotional and physical care in their hands, want to assure that they can adequately provide the care. I had an inpatient client tell me, not to long ago, that if he knew his therapist or psychiatrist had mental problems he would doubt the treatment effectiveness. Interesting!