Effective organizational change requires intentional planning. We applied Kotter's 8-Step Process for Leading Change model in understanding and evaluating how a federally qualified health center in rural Kentucky implemented a significant organizational change - a proactive office encounter (POE) model - to improve preventive care service delivery, close care gaps, and reduce health disparities among its patients. We completed qualitative interviews with 21 clinic personnel (eg, administrators, physicians, support staff, care coordinators) who were directly involved with POE implementation. We found evidence of steps 1 through 7 of Kotter's 8 steps of change in the POE implementation process. Step 8, anchoring new approaches in the organizational culture, was an area for improvement. Change-management models, such as Kotter's 8-Step Process for Leading Change, provide a systematic guide for health clinics to implement sustainable organizational change aimed at improving patient health outcomes.