Also licensed professional counselors (LPC) and psychiatrist nurses, who can also prescribe non-scheduled drugs. I've read that PsyD's are more into therapy while PhD psychologists are research-oriented. The only psychologists my insurance would pay for are associated with academic medical schools and don't take patients. My ideal is what I had: a psychiatrist heavily invested in therapeutic treatment as well as drugs. Most of them nowadays are strictly into psychopharmacology which pays much better plus you don't have to deal with messy personal situations (Go medical school!)

I haven't had much other experience--I would love to try a psychologist--but it seems like social workers are more into giving you (possibly annoying) advice.