What Is Aarp Medigap Insurance? 
AARP Medicare Supplement Plans are insured by United Healthcare . United Healthcare pays a royalty fee to AARP to have them sponsor their Medicare Supplement plans and that is why you must be a member of AARP in order to apply for one of their Supplements . AARP sponsors the plan they are not providing the insurance coverage or paying the claims . After the Medicare Supplement has been issued and in benefit you do do have to renew your AARP membership if you choose not to in order to keep your Supplement . 