Medicare Advantage Instability, Network Verification, and Oversight

2027 withdrawals, nonrenewals, provider-contract disputes, relocations, and changing supplemental benefits could disrupt roughly 2.6-2.9 million seniors. Fairview's January 1 scheduling cutoff for UHC members, the September 30 NewYork-Presbyterian-UHC deadline, October 1 network losses including NKC Health, and the October 15 enrollment start make network, formulary, benefit, continuity-of-care, Medigap, and total-cost reviews urgent. Recent articles reinforce network and plan-detail verification but add no confirmed new development.