The purpose of the current study was to replicate and extend previous findings; further demonstrating the effectiveness of an ACT outpatient, group-based treatment for Veterans who suffer from mixed idiopathic, chronic, non-cancer pain. This course of treatment utilized the VA’s Stepped Care Model of Pain Management as a framework. A sample of 50 Veterans who participated in an ACT for chronic pain group intervention was evaluated after completing a pain health education program at a Midwestern VA Medical Center between February 16, 2010 and November 9, 2010. All participants completed a standard set of pre- and post-intervention measures. Paired-samples t tests were conducted to evaluate the impact of the manualized intervention on Veterans’ scores. The current study found a significant difference in measures of pain interference, illness-focused coping, and global distress upon completion of the intervention. Findings suggest that ACT is an effective treatment for Veterans with chronic pain as a secondary consultative service.