The Medicare Coordinated Care Demonstration is testing a range of models aimed at improving the care of chronically ill beneficiaries with Medicare fee-for-service coverage. This report, from Mathematica’s evaluation of 15 coordinated care/disease management programs, describes Medical Care Development’s coordinated care program, addressing who enrolls, the extent of physician engagement, implementation of approaches to improving patient health and reducing health care costs, and enrollees’ Medicare service use and costs during its first months of operation. The report also discusses the program’s strengths, unique features, and potential barriers to success.