Md. Code, State Gov't § 7-310

(a) Except as otherwise provided by this subtitle, a record of a Program participant’s actual address and telephone number maintained by the Secretary of State or a State or local agency is not a public record within the meaning of § 4–101 of the General Provisions Article. (b) The Secretary of State may not disclose a Program participant’s actual address or telephone number or substitute address except as provided in subsection (c) of this section and: (1) (i) on request by a law enforcement agency for law enforcement purposes; and (ii) as directed by a court order; or (2) on request by a State or local agency to verify a Program participant’s participation in the Program or substitute address for use under § 7–308 of this subtitle. (c) The Secretary of State shall notify the appropriate court of a Program participant’s participation in the Program and of the substitute address designated by the Secretary of State if the Program participant: (1) is subject to a court order or an administrative order; (2) is involved in a court action or an administrative action; or (3) is a witness or a party in a civil or criminal proceeding.