About Cedar Rapids Comprehensive Treatment Center in Cedar Rapids, IA Cedar Rapids Comprehensive Treatment Center (CTC) provides personalized care for adults of all genders who have been struggling with an addiction to prescription pills, heroin, or other opioids. Our center offers outpatient medication-assisted treatment (MAT). MAT is an evidence-based service that combines the use of certain prescription medications with counseling to help people end their opioid use and achieve long-term recovery from opioid addiction. Unlike methadone clinics that only offer one medication choice, Cedar Rapids CTC can incorporate methadone, buprenorphine, naloxone, or Suboxone into each patient’s personalized opioid addiction treatment plan.