(a) As soon as practical after the close of the hearing, the hearing officer issues a written decision that -
(1) Is based upon the evidence of record; and
(2) Contains separately numbered findings of fact and conclusions of law.
(b) The hearing officer provides a copy of the hearing decision to each party.
(c) The hearing decision is final and binding unless it is reversed or modified by the Administrator following review under § 423.666, or reopened and revised in accordance with § 423.668.