Texoma Medical Center (TMC) – Behavioral Health Center 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, Texoma Medical Center (TMC) – Behavioral Health Center To help patients achieve sobriety, Texoma Medical Center (TMC) – Behavioral Health Center provides intake assessments. Afterward, patients receive during treatment. Texoma Medical Center (TMC) – Behavioral Health Center is located in Sherman, Texas, providing treatment for people in Grayson County, accepting cash or self-payment.