Sole owners who are initially enrolling will use the CMS-855I. For practice locations that operate under the same tax identification number (TIN), you will submit only one CMS-855I application; however, you will need to include two Section 4B pages to identify each practice location.

If an enrolled sole owner is adding a new practice location to an existing record, this can be updated on either the CMS-855I or the CMS-855B.

For practice locations that operate under separate TINs, you will need to submit separate applications for each of the practices.