Although many public health initiatives have been implemented through collaborations with faith-based institutions, little is known about best practices for developing such programs. Using a community-based participatory approach, this case study examines the implementation of an initiative in the Bronx, New York, that is designed to educate community members about health promotion and disease management and to mobilize church members to seek equal access to health care services. The study used qualitative methods, including the collaborative development of a logic model for the initiative, focus groups, interviews, analysis of program reports, and participant observation. The paper examines three key aspects of the initiative's implementation: (1) the engagement of the church leadership; (2) the use of church structures as venues for education and intervention; and (3) changes in church policies. Key findings include the importance of pre-existing relationships within the community and the prominent agenda-setting role played by key pastors, and the strength of the Coalition's dual focus on health behaviors and health disparities. Given the churches' demonstrated ability to pull people together, to motivate and to inspire, there is great potential for faith-based interventions, and models developed through such interventions, to address health disparities.