About Farrell Comprehensive Treatment Center in Farrell, PA Farrell Comprehensive Treatment Center (CTC) in Farrell, Pennsylvania, offers outpatient treatment to people who are struggling with opioid addiction. We assist adults age 18 and older of all genders. Our treatment team includes experienced professionals who are committed to helping people work toward recovery from opioid addiction. We provide medication-assisted treatment (MAT), an approach that includes both medication and counseling in a treatment plan. The goal of MAT is to treat the whole person. MAT is an evidence-based practice that is utilized by many methadone clinics.