A/An ________ is a person who is not a medical doctor,but has a master's degree or PhD in a specific field of psychology.

Medical Doctor

A professional who practices medicine, which involves promoting, maintaining, or restoring health through the study, diagnosis, prognosis, and treatment of disease, injury, and other physical and mental impairments.

PhD

An abbreviation for Doctor of Philosophy, a doctoral degree awarded for advanced study and original research in a specified field.