What is the difference between a psychiatrist and a psychologist?

A Psychiatrist is Medical Doctor (MD) or Doctor of Osteopathic Medicine (DO) that has completed both general medical school, and an additional specialty in psychiatry. While some psychiatrists will also offer psychotherapy, most will prescribe medications where indicated as an adjunct to psychotherapy.

Psychologists are Doctors of Philosophy (Phd), or Doctors of Psychology (PsyD), that have completed graduate school and residency in the area of psychology, and often specifically clinical psychology. They are highly trained in multiple therapy methods and interventions. The delivery of the therapy sessions, psychological testing, and pyscho-education are their main roles. Psychologists can prescribe medications in only some states with an additional qualification. Most Psychologists do not prescribe medications, but will work in conjunction with a psychiatrist for medication management where indicated.