Objectives are (1) to implement then analyze via a randomized controlled trial whether a nurse-led, coordinated care management intervention, Care Coordination for Health Promotion and Activities in Parkinson's Disease (CHAPS), compared to usual care will improve adherence to evidence-based practice guidelines and improve health outcomes in Veterans with Parkinson's disease in a region of the southwest United States, and (2) to analyze extent of implementation of the CHAPS intervention and its costs to determine how the intervention can be made sustainable and disseminated throughout Veterans Affairs Medical Centers if efficacious.