About Wichita Comprehensive Treatment Center in Wichita, KS Located in Wichita, Kansas, Wichita Comprehensive Treatment Center (CTC) provides medication-assisted treatment (MAT) to adults age 18 and older of all genders who are struggling with opioid use disorder. For many years, scientific research has shown that MAT is a safe and effective way to help people achieve long-term recovery from opioid addiction. By combining the medication element of MAT with a therapeutic component, people are more likely to reduce opioid cravings and avoid the painful effects of withdrawal that may otherwise occur.