About Tigard Comprehensive Treatment Center in Tigard, OR Located in Tigard, Oregon, Tigard Comprehensive Treatment Center is a Comprehensive Treatment Center (CTC) that delivers medication-assisted treatment (MAT) to adults age 18 and older of all genders who are struggling with opioid use disorder. Medication-assisted treatment is a scientifically proven way to treat opioid addiction that is meant to prevent relapse and sustain recovery. Studies have shown that MAT is both a safer and more effective way to produce better recovery outcomes than attempting treatment without medications such as methadone.