Seniors may be concerned that once they get on Medicare their insurance coverage will decrease in benefits. When you combine Medicare Part A and Part B with Medicare Supplement Insurance you will find great insurance coverage for your medical bills. For example, Medicare supplement coverage found on a Plan F covers all the Medicare Part A and Part B deductibles and covers generally the 20% of Medicare Part B charges not covered by Medicare (as well as 100% of all excess charges). How can the coverage improve unless you were paid to go to the doctor or hospital! The only piece missing is a Part D (prescription drug plan) to the Medicare and Medicare supplement coverage.