UnitedHealthcare serves individuals and employers ranging from sole proprietorships to large, multi-site and national and international organizations; delivers health and well-being benefits to Medicare beneficiaries and retirees; manages health care benefit programs on behalf of state Medicaid and community programs and their participants and serves the nation's active and retired military and their families through the TRICARE program. Optum is a health services business serving the broad health care marketplace, including payers, care providers, employers, governments, life sciences companies and consumers. Using advanced data analytics and technology, Optum helps improve overall health system performance: optimizing care quality, reducing costs and improving the consumer experience and care provider performance.