“Active treatment” means the regular participation by a patient in professionally developed and supervised activities, experiences, or therapies based on an individual treatment plan. “Department” means the Maryland Department of Health. “Mental health professional treatment team” means: One or more duly licensed physicians or psychiatrists, one of whom shall assume responsibility for the development and implementation of an individual treatment plan. If the physician member of the mental health professional treatment team has less than 2 years of post-degree experience in a mental health setting, at least one other member of the team shall have attained the master's degree and have 2 years of post-degree experience in a mental health setting. One or more of the following mental health professionals: A psychologist, licensed in the State, or an individual with a master's degree in psychology or a related field from an accredited college or university in a program acceptable to the Board of Examiners of Psychologists, under the supervision of a licensed psychologist, and with at least 2 years of postdegree experience in a mental health setting; A professional registered nurse licensed in the State with at least one of the following credentials: Two years of psychiatric nursing experience; A bachelor of science degree and 1 year of psychiatric experience; or A master's degree and 1 year of psychiatric nursing experience; A social worker, licensed in the State, with a master's degree in social work from an accredited school of social work and 2 years experience, 1 of which shall have been in a mental health setting; or An occupational therapist, licensed in the State, with a bachelor of science degree in occupational therapy from an accredited school of occupational therapy and 2 years experience, 1 of which shall have been in a mental health setting. Other members of the hospital staff who work directly with the patient, including other professionals and paraprofessionals and professionals in service and in training. “Patient” means any person voluntarily or involuntarily admitted to one of the mental health facilities under the jurisdiction of, or licensed by, the Maryland Department of Health pursuant to the provisions of Health-General Article, Title 10, Annotated Code of Maryland.