45 CFR § 705.9 - Disclosure of records to a person other than the individual to whom the record pertains.
(a) Any individual who desires to have his or her record disclosed to or mailed to a third person may authorize that person to act as his or her agent for that specific purpose. The authorization shall be in writing, signed by the individual, and notarized. The agent shall also submit proof of his or her own identity as provided in § 705.4.
(b) The parent of any minor individual or the legal guardian of any individual who has been declared by a court to be incompetent, due to physical or mental incapacity, may act on behalf of that individual in any matter covered by this part. A parent or guardian who desires to act on behalf of such an individual shall present suitable evidence of parentage or guardianship by birth certificate, copy of a court order or similar documents, and proof of the individual's identity as provided in § 705.4.