Medicare, which is made up of Part A and Part B, does not pay for Life Alert or any other personal emergency response systems (PERS). Medicare does not consider PERS to be medically necessary and therefore does not cover them. However, some Medicare Advantage plans, which are alternative options to original Medicare, may include PERS as part of their preventive health services. If you are enrolled in a Medicare Advantage plan, you may want to check if it covers PERS as part of its supplemental coverage.