(a) If the Secretary determines after the investigation that a violation of this chapter or of regulations enacted pursuant to this chapter which warrants formal disciplinary action has not occurred, but that an act or omission of the person is a matter of concern and that the person's practice may be improved if the person is made aware of the concern, the Secretary may issue a nondisciplinary, confidential letter of concern regarding the person's act or omission.
(b) If a person licensed or certified receives a total of 3 letters of concern pursuant to this section addressing the same or substantially similar conduct, the Secretary may reasonably impose any of the restrictions of § 1218(m)(3) of this title in order to protect the health, safety, or welfare of the person's current or prospective students.