In the proposed developmental study, eight chiropractic clinics will participate in the design, implementation, and evaluation of an office-based tobacco cessation intervention. Adapted from previous office-based intervention protocols, the intervention will be based on Cognitive Learning Theory (Bandura, 1997) and the Clinical Practice Guidelines (Fiore, Bailey, Cohen, et al., 2000) and will also incorporate Motivational Interviewing techniques (Miller & Rollnick, 1991). Finally, using the RE-AIM framework (Glasgow, Vogt & Boles, 1999), we will assess individual-, clinic-, and organization-level variables that may affect the delivery of treatment for tobacco dependence, the implementation and maintenance of the intervention.