Stand-alone Prescription Drug plans and Medicare Advantage plans outline their basic benefits in a booklet called the Summary of Benefits (SOB). This document presents an overview of the services your plan will cover. When you first enroll in a stand-alone Prescription Drug plan or Medicare Advantage plan, Medicare requires that you receive a copy of the SOB for that plan.
Insurance companies usually have a SOB and other plan documents available on their websites and give customers the ability to create an online account.