An order for guardianship of an individual: except as provided in § 5-3A-23 of this subtitle, § 4-414 of the Estates and Trusts Article, and § 2-123 of the Real Property Article, terminates a parent’s duties, obligations, and rights toward the individual; eliminates the need for notice to a parent as to the filing of an adoption petition; eliminates the need for further consent of a parent to adoption of the individual; and grants guardianship of the individual to a child placement agency. Unless a court gives legal custody to another person, a child’s guardian under this subtitle has legal custody. Unless a court orders otherwise and subject to review by the court, a child’s guardian may make all decisions affecting the child’s education, health, and welfare, including consenting to: adoption of the child; application by the child for a driver’s license; enlistment by the child in the armed forces; marriage of the child; and medical, psychiatric, or surgical treatment.