CMS is soliciting comments regarding an interim study of options for revising geographic location adjustments under the Medicare physician fee schedule, entitled “Review of Alternative GPCI Payment Locality Structures.” CMS notes that it is not proposing to make any changes to the payment localities at this time, but CMS encourages comments on the options presented in the report as well as suggestions for other options, which will be considered in the development of possible future rulemaking on this issue. Electronic comments on the interim report may be submitted to until November 3, 2008.