Final answer:
Entities that manage Medicare paperwork are known as intermediaries. These are usually insurance companies contracted by CMS to serve a specific area. Medicare provides healthcare primarily to those over 65.
Step-by-step explanation:
Entities that handle the paperwork for Medicare and are typically insurance companies contracted by CMS for a specific area are known as intermediaries. Neither the enrollees, physicians, nor beneficiaries perform this role. Intermediaries work with Medicare, which is the public healthcare system offering insurance primarily to people over sixty-five years old.