A UHC Medicare provider is a healthcare professional, such as a nurse or physician, who accepts UnitedHealthcare Medicare plans, according to UnitedHealthcare. UHC has several different Medicare plans available, and, as of 2015, lists of providers for these plans are hosted online.
As of 2015, UnitedHealthcare is the largest health carrier in the United States, states About.com. UHC's Medicare division is the largest company in the nation dealing with the health needs of senior citizens. UHC's provider lists include individual doctors, as well as hospitals and clinics that accept its Medicare plans.
UHC's Medicare plans include complete coverage, as well as supplemental coverage that allows members to go to any hospital that accepts Medicare, according to the UHC website.