About Christiansburg CTC Methadone Clinic in Christiansburg, VA Christiansburg Comprehensive Treatment Center (CTC) is a trusted source of outpatient care for adults in the Christiansburg, Virginia, area who have been struggling with opioid addiction. Our center in Christiansburg, Virginia, provides medication-assisted treatment (MAT) to help adults end their opioid use and make the lifestyle changes that will empower them to achieve successful long-term recovery from opioid addiction. MAT is an evidence-based, research-supported method of treatment for opioid addiction that incorporates prescription medications and counseling.