1 The Causes, Treatments, and Symptoms of Acute Thyroiditis The thyroid gland is a butterfly-shaped gland located in the middle of the lower neck. 2  Its main purpose is to control the body's metabolism, which is the rate at which your bâ¦.
Medicare is divided into a hospital insurance program and a supplementary medical insurance program. The Medicare hospital insurance plan is funded through Social Security payroll taxes.
In the United States, Medicare is a national social insurance program, administered by the U.S. federal government since 1966, currently using about 30 private insurance companies across the United States.