OPI Houston is a residential treatment and transitional living program for young adults in Needville, Texas. OPI describes its Houston program as serving young adults ages 17 to 28 through residential treatment, transitional living, intensive outpatient care, life-skills work, and community support (OPI Houston).

NATSAP lists OPI Houston as a full member and describes a continuum of care for young adults with significant mental-health challenges. Embark Behavioral Health identifies OPI Houston as formerly Fulshear's Residential Treatment Center in Needville (NATSAP, Embark Behavioral Health).