What is a Medicare Supplement Plan? Medicare Supplement Plans are offered by private insurance carriers. These plans are "standardized" plans, meaning the benefits for any lettered plan with one carrier, must have identical benefits for the same lettered plan with a different insurance carrier.
All health insurance plans now share some common characteristics. The Affordable Care Act requires that all health insurance plans offered in the individual and small-group markets must provide a comprehensive package of items and services, known as the 10 essential health benefits.