Offender reentry, felony declassification, and the opioids epidemic have led to quick and widespread implementation of substance abuse and mental health treatment programming in justice settings. This tremendous increase in offender treatment programming has outpaced applied research on program quality and treatment efficacy. This study examined whether designated evidence-based practices are actually delivered in funded treatment initiatives. Secondary data was utilized from the National Institute of Justice’s CrimeSolutions.gov, a national evidence-based practice and program registry. A content analysis methodology examined CrimeSolutions.gov program profiles and topical refereed literature through systematic analysis of five offender treatment evidence-based practices (actuarial screening, co-occurring disorders treatment, medication assisted treatment, individual treatment planning, and isolated therapeutic communities). Findings indicate a variable degree of evidence-based practice delivery and orient discussion around how to improve the implementation of evidence-based practices toward enhancing offender substance abuse programming.