The CS 1018 study will recruit a total of 600 patients seeking treatment for opiate dependence. They will be recruited from six states (Florida, New York, Texas, California, Washington, and Illinois), with up to ten private physician sites or clinics participating in each state. Coordination of the participating sites and clinics in each of the six states will be performed from an associated Department of Veterans Affairs Medical Center (Tampa VAMC, New York City VAMC, San Antonio VAMC, Long Beach VAMC, Seattle VAMC, and Hines VAMC). The Principal Investigator (PI) at each of the six VAMC?s will be a physician experienced in the treatment of opiate dependent patients.