About Fashion Valley Comprehensive Treatment Center in San Diego, CA Fashion Valley Comprehensive Treatment Center (CTC) in San Diego, California, is a respected provider of outpatient treatment for adults age 18 and older of all genders who have been struggling with opioid addiction. Our San Diego center offers medication-assisted treatment (MAT), which combines prescription medication and counseling to help patients end their opioid use and successfully achieve long-term recovery. Decades of research has documented the effectiveness of MAT. Many years ago, methadone clinics that offered MAT were limited to one type of medication.