This excerpt taken from the UNH 10-K filed Mar 6, 2007.
Medicare Prescription Drug Benefit (Part D)
Effective January 1, 2006, Ovations provides the Medicare prescription drug benefit (Part D) to beneficiaries throughout the United States and its territories. Among the several Part D plans it offers, Ovations provides a Medicare prescription drug coverage plan branded by AARP. Ovations also provides Part D drug coverage through its Medicare Advantage program, Special Needs Plans and stand-alone prescription drug plans. As of December 31, 2006, including PacifiCare, Ovations had enrolled approximately 5.7 million members in the Part D program, including approximately 4.5 million in the stand-alone prescription drug plans and approximately 1.2 million in Medicare Advantage plans incorporating Part D coverage.