sentences:  The Rhode Island Chronic Care Sustainability Initiative (CSI-RI) is a community-wide collaborative effort convened in 2006 by the Office of the Health Insurance Commissioner to develop a sustainable model of primary care that will improve the care of chronic disease and lead to better overall health outcomes for Rhode Islanders.CSI-RI is focused on improving the delivery of chronic illness care and supporting and sustaining primary care in the state of Rhode Island through the development and implementation of the patient-centered medical home.The CSI-RI Medical Home demonstration officially launched in October 2008 with 5 primary care practices and was expanded in April 2010 to include an additional 8 sites.