Merit Health River Region – Behavioral Health Services is an mental health treatment center that provides outpatient treatment for men and women from 18+ years of age. As part of their special programs, Merit Health River Region – Behavioral Health Services To help patients achieve sobriety, Merit Health River Region – Behavioral Health Services provides intake assessments. Afterward, patients receive during treatment. Merit Health River Region – Behavioral Health Services is located in Vicksburg, Mississippi, providing treatment for people in Warren County, accepting cash or self-payment.