Faculty development fellowship programs provide avenues for physicians to develop careers in academic medicine. However, the long-term impact of these programs has not been evaluated. This paper examines the impact of an 18-month substance abuse faculty development fellowship administered by the Society of Teachers of Family Medicine (STFM) 7 years after the fellowship's completion. Fellows were interviewed by telephone. Their CVs were examined to assess how their present substance abuse teaching, clinical, research, administrative, scholarly, and networking activities compared with those prior to the fellowship. Initially, fellows contributed modules to an STFM publication and increased substance abuse teaching in their home institutions. Seven years later, fellows reported increased activity in substance abuse teaching, clinical, administrative, and research activities over those prior to the fellowship and attributed these increases to the fellowship. Fellows' CVs reflected increased publications, presentations, and networking activities with each other, including the creation of the STFM Group on Substance Abuse. In a 7-year follow-up, STFM's substance abuse fellowship program met its original goals, strengthened the academic and professional achievements of the fellows, and fostered the development of several fellows as leaders within the substance abuse field.