Nearly 44 percent of dual eligibles opted out of the California demonstration to coordinate care for beneficiaries eligible for both Medicare and Medicaid -- a move that comes as CMS officials are studying why beneficiaries across duals demonstrations choose to opt out after passive enrollment. The opt-out rate in California's demo, the largest duals demo in the country, is higher than some expected, but Molina Healthcare, whose plans participate in the demos, anticipated it. A CMS official said the duals...