“Part B covers physician visits, outpatient services, preventive services, and some home health visits. Many Part B benefits are subject to a deductible ($185 in 2019), and, typically, coinsurance of 20 percent. No coinsurance or deductible is charged for an annual wellness visit or for preventive services that are rated ‘A’ or ‘B’ by the U.S. Preventive Services Task Force, such as mammography or prostate cancer screenings.”

Source: Issue Brief: An Overview of Medicare. Kaiser Family Foundation. February 2019. http://files.kff.org/attachment/issue-brief-an-overview-of-medicare