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Medicare is the health insurance program provided by the U.S. federal government for older Americans once they reach the age of 65. Individuals with certain conditions, such as those who are permanently disabled or have end-stage renal disease, may also be eligible for Medicare, regardless of their age. The Medicare program is administered by the Centers for Medicare and Medicaid Services (CMS), a federal agency headquartered in Baltimore, Maryland.

Medicare is a complex program with multiple options for receiving insurance coverage and varying features and rules that accompany each option. The program is continually evolving as new legislation is introduced and plan types, features, or payment policies are changed. While older adults often require more healthcare services due to chronic medical conditions or declining health, they ...

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