31 CFR §8.23

1. (a)The Director, in denying an application for enrollment, shall inform the applicant as to the reasons. The applicant may, within 30 days after receipt of the notice of denial, file a written appeal together with reasons in support thereof, with the Director of Practice. The Director of Practice shall render a decision on the appeal as soon as practicable.
2. (b)An applicant may, within 30 days after receipt of the decision of the Director of Practice in sustaining a denial of enrollment, appeal the decision to the Secretary.