Psychiatrist

Psychiatrists are medical doctors (MD or DO) who completed a psychiatry residency. They are the group that can prescribe and manage psychiatric medication, and many practise in coordination with a separate therapist rather than providing weekly therapy themselves.

The formal definition

A Psychiatrist specializes in the prevention, diagnosis, and treatment of mental disorders, emotional disorders, psychotic disorders, mood disorders, anxiety disorders, substance-related disorders, sexual and gender identity disorders and adjustment disorders. Biologic, psychological, and social components of illnesses are explored and understood in treatment of the whole person. Tools used may include diagnostic laboratory tests, prescribed medications, evaluation and treatment of psychological and interpersonal problems with individuals and families, and intervention for coping with stress, crises, and other problems.

Source: NUCC Health Care Provider Taxonomy code set. This is the definition used for billing and registration, which is why it reads the way it does.