Medicare Value-Based Purchasing for Physicians' Services Act of 2005 - Amends part B (Supplementary Medical Insurance) of title XVIII (Medicare) of the Social Security Act to provide for value-based purchasing in the payment for physicians' services under the Medicare program. Establishes updates to the single conversion factor for 2006 through 2009 and succeeding years for such services.
Directs the Secretary of Health and Human Services to: (1) provide, as part of the rulemaking process, for the selection of quality measures (Q-measures) and efficiency measures (E-measures) meeting specified general requirements; and (2) determine a single rating of each billing unit based on Q and E measures, and disclose to the public whether a particular billing unit met performance objectives.
Requires the Secretary to establish such performance objectives, and base upon them any increased updates in the payment for physician services.