(a) In this section, "authorized provider" means:
(1) a physician licensed to practice in this state;
(2) a psychologist licensed to practice in this state;
(3) a professional licensed to practice in this state and certified by the department; or
(4) a provider certified by the department before September 1, 2013.
(b) A person believed to be a person with an intellectual disability, the parent if the person is a minor, or the guardian of the person may make written application to an authorized provider for a determination of an intellectual disability using forms provided by the department.