Maryland Code, Health-General § 8-205

(a) Each person who is authorized to administer, use professionally, or dispense a drug and each public official who has duties with respect to drugs or to users of them shall report to the Administration any relevant information that the Administration requires to carry out the purposes of this title, subject to the provisions of State and federal laws and regulations governing confidentiality.

(b) An employee or unit of the State or of any of its political subdivisions shall release to the Administration, on its request, information that deals with drug abuse or alcohol abuse or drug dependence or alcohol dependence, including the name of an individual with a drug or alcohol problem if needed to carry out the purposes of this title, subject to the provisions of State and federal laws and regulations governing confidentiality.