this much - about 80% - medicare will pay for. what's left, you have to pay for that. that's where an aarp medicare supplement insurance plan, insured by unitedhealthcare insurance company comes in. this type of plan helps pay some of what medicare doesn't. and these are the only plans to carry the aarp endorsement for meeting their high standards of quality and service. to request your free decision guide call now or go online at aarpmedicaresupplement.com. with this type of plan, you'll have the freedom to choose any doctor who accepts medicare patients. and when you travel, your plan will go with you - anywhere in the country. whew! call or go online and find out more.