Maryland Code, Health-General § 7-903

(a)(1) In addition to any other license required by law, a person shall be licensed by the Department before the person may provide services to an individual with developmental disability or a recipient of individual support services.

(2) The Department shall adopt regulations providing for the services requiring licensure under paragraph (1) of this subsection.

(b)(1) If a person is licensed or certified by another State agency or accredited by an organization approved by the Secretary in accordance with § 19-2302 of this article to provide services to an individual with a developmental disability or a recipient of individual support services, the Deputy Secretary may waive the requirement for a license by the Department.

(2) Upon a showing by the Deputy Secretary that the licensed, certified, or accredited person is out of compliance with licensing regulations adopted by the Secretary, the Deputy Secretary may revoke the waiver.