Despite the efficacy of buprenorphine-naloxone for the treatment of opioid use disorders, few physicians in Washington State use this clinical tool. To address the acute need for this service, a Rural Opioid Addiction Management Project trained 120 Washington physicians in 2010-2011 to use buprenorphine. We conducted this study to determine what proportion of those trained physicians began prescribing this treatment and identify barriers to incorporating this approach into outpatient practice.