About Kent Comprehensive Treatment Center in Kent, WA Kent Comprehensive Treatment Center, located in Kent, Washington, is a Comprehensive Treatment Center (CTC) that provides medication-assisted treatment (MAT) to adults age 18 and older of all genders who are struggling with opioid addiction. Decades of research shows that MAT gives people a better chance to safely and effectively end their opioid use and reduce their risk of relapse. The medications we deliver can help reduce or eliminate cravings and painful withdrawal symptoms, while the therapeutic counseling we provide can help with the mental, emotional, and social aspects of recovery.