42 CFR § 422.674 - Authority of representatives.
(a) A representative appointed and qualified in accordance with § 422.672 may, on behalf of the represented party -
(1) Gives or accepts any notice or request pertinent to the proceedings set forth in this subpart;
(2) Presents evidence and allegations as to facts and law in any proceedings affecting that party; and
(3) Obtains information to the same extent as the party.
(b) A notice or request sent to the representative has the same force and effect as if it had been sent to the party.