UnitedHealth unites its health plans with consumers across the US. As a leading health insurer, it offers a variety of plans and services to group and individual customers nationwide. Its UnitedHealthcare health benefits segment manages HMO, PPO, and POS plans, as well as Medicare, Medicaid, state-funded, and supplemental vision and dental options. Together, the UnitedHealthcare businesses serve about 40 million members. In addition, UnitedHealth's Optum health services units -- OptumHealth, OptumInsight, and OptumRx -- provide wellness and care management programs, financial services, information technology solutions, and pharmacy benefit management (PBM) services to an additional 115 million.