Knowledge about, comfort with, and work experience with evidence-based treatments (i.e. motivational interviewing, harm reduction, contingency management, cognitive behavior therapy, stage of change model, addiction medication, interventions, etc.). Performs a combination, but not necessarily all, of the following duties: Analyze, evaluate patient data, and/or test to establish a diagnosis and prescribe medication to treat or manage a patient's symptoms (mental, emotional, or behavioral disorders).