A survey was administered anonymously to 45 mental health providers who delivered smoking cessation treatment integrated into posttraumatic stress disorder care (integrated care) as part of a multisite clinical trial. Survey items assessed key factors associated with successful implementation of research-based practices from the perspective of treating providers. Factors assessed included prior experiences with cessation treatment, compatibility of integrated care with current practices, feasibility of adopting integrated care into regular practice, and adequacy of training. More than half of respondents reported that integrated care delivery was feasible, and they would be considerably or extremely likely to continue delivery in routine practice. Positive prestudy beliefs and more experience delivering cessation care were associated with stronger endorsement of delivering integrated care after the study. The most frequently cited obstacle to delivering integrated care involved time limitations. Future efforts should focus on developing treatment adaptations that address provider-identified barriers and identifying clinic- and administrative-level supports that facilitate delivery of integrated care and assist providers who incorporate integrated care into clinical practice.