Reviewed by Russell Noga, Licensed Medicare Insurance Broker (all 50 states) | Last updated October 8, 2026
Oklahoma’s Medicare Advantage market changes sharply for 2027: Wellcare (Centene) is leaving Oklahoma, and HCSC’s Blue Cross and Blue Shield of Oklahoma shrinks from 58 counties to 6 and drops its Blue-branded plans. A new plan from the Muscogee (Creek) Nation enters 11 counties.
Many Oklahoma members need a new plan for 2027 and generally have a guaranteed issue right to certain Medigap plans.
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