(a)(1) CMS may deactivate a physician's or practitioner's ability to order, certify, or refer the Medicare services and items identified in § 424.507(a) and (b) if the individual:
(i) Is enrolled via the Form CMS-855O application solely to order, certify, or refer Medicare services or items; and
(ii) Has not been listed as the ordering, certifying, or referring individual on a Medicare Part A or B claim received in the previous 12 consecutive months.
(2) For purposes of this section only, the term deactivate means that the physician's or practitioner's ability to order, certify, or refer Medicare services or items has been stopped but can be restored upon the submission of updated information.
(b)(1) For a deactivated physician or practitioner to reactivate an ability to order, certify, or refer Medicare services and items, the individual must recertify that the enrollment information currently on file with Medicare is correct, furnish any missing information as appropriate, and be in compliance with all applicable enrollment requirements in this title.
(2) Notwithstanding paragraph (b)(1) of this section, CMS may, for any reason, require a deactivated physician or practitioner to, as a prerequisite for reactivating the ability to order, certify, or refer, submit a complete Form CMS-855O application.
(c) The effective date of a reactivation of an ability to order, certify, or refer Medicare services and items under this section is the date on which the Medicare contractor received the individual's reactivation submission that was processed to approval.
(d) A physician or practitioner may not order, certify, or refer the Medicare services or items described in § 424.507(a) and (b) while deactivated under this section.
[90 FR 55618, Dec. 2, 2025]