We had a grand rounds this week on 'Spirituality in Psychotherapy.' The doctor, a psychiatrist, spoke on how he uses Buddhist meditation variations with his patients, and lots of other more spiritual stuff. He stated he was somehow qualified to do this - taught by tibetan monks or something and certified.
But no, it's not mainstream. We tend to stick to more scientifically-validated treatment modalities.
This, of course, takes nothing away from those modalities you mentioned.
Look how effective meditation is for the Jedi. No one can dispute that. For example, when Yoda was concerned after Jedi Master Obi-Wan discovered the missing planet Kamino with the clone army.....
nevermind.