When you hire a therapist......they usually give you their professional stats....how long a therapist, method(s); payment rules, techniques, etc.......but there is NO way to know if they have mental health issues; most humans have something they are dealing with .....you can google...what to look for in a therapist.......they aren't required to talk about their private lives...If you go into psychology Today online; you can read bios of all kinds of therapists.