UnitedHealth Group | 1,547,749 followers on LinkedIn. UnitedHealth Group is a health care and well-being company with a mission to help people live healthier lives and help make the health system work better for everyone. We are 340,000 colleagues in two distinct and complementary businesses working to help build a modern, high-performing health system through improved access, affordability, outcomes and experiences. Optum delivers care aided by technology and data, empowering people, partners and providers with the guidance and tools they need to achieve better health.