To amend title XVIII of the Social Security Act to limit the penalty for late enrollment under the Medicare Program to 10 percent and twice the period of no enrollment.

Amends part B (Supplementary Medical Insurance) of title XVIII (Medicare) of the Social Security Act to limit the late enrollment penalty to a ten percent increase in the monthly part B premium due over a period equal to twice the number of years that the part B beneficiary could have been but was not enrolled under Medicare part B.