Is there any doctor who prescribes meds for mental disorders and give behavior therapy and methods... (like he's a psychatrist+psychologist together)?

Yes: Yes, there are such psychiatrists, but I am afraid that they tend to be rather few and far between as psychiatry gets modeled by the insurance industry. Perhaps I should use the word mangled by the insurance industry. Best wishes.

Some...: Psychiatrists still do both talk and drug therapy; some prefer to just give drugs ;#40;psychopharmacologists;#41; and work with talk therapists ;#40;psychologists, psychiatric social workers, clergy;#41;.