Original Medicare: This coverage is offered by the federal government and is broken into two parts: Part A and Part B. Part A is generally premium-free and includes hospital coverage. Part B has a set monthly premium and includes most medically necessary services and equipment. Medicare Advantage (Part C): Sometimes called Part C, Medicare Advantage plans are offered by private insurance companies in contract with the federal government. These plans include the coverage provided under Medicare Parts A and B, and generally add other benefits, like vision, dental, hearing or prescription drug coverage. Some of these plans require premiums, but some have $0 premiums, copays, and deductibles. Individuals who enroll in a Medicare Advantage plan do continue to pay their Part B premiums.