Medicare Supplemental Insurance Quotes Shop and compare Medicare Supplemental health plans available in your state with RxCare.org -Medicare supplemental health insurance provides you with additional health insurance benefits that are not available through Medicare Part A or Part B. Some Medicare supplemental plans, also referred to as Medigap insurance,will provide you with prescription coverage and preventative health care. Medicare supplemental health insurance plans can also cover your Medicare Part A deductible, extra days of hospital care, your Medicareco-payment amounts, skilled nursing and foreign travel emergency care. Before you consider purchasing Medicare supplemental insurance, you should understand the coverage options under Medicare and the rules for joining or switching Medicare policies.You should first maximize your benefits under available Medicare options as well as consider the effect of other coverage options such as group health insurance from your employer or trade union. Analyzing your Medicare costs after accounting for any other health insurance sources may show that you do not need a Medicare supplemental insurance policy.