(a) The Department of Health and Human Resources is authorized and directed to establish, maintain and operate comprehensive community mental health centers and comprehensive intellectual disability facilities, at locations within the state that are determined by the secretary in accordance with the state's comprehensive mental health plan and the state's comprehensive intellectual disability plan. Such facilities may be integrated with a general health care or other facility or remain separate as the Secretary of the Department of Health and Human Resources may by rules prescribe: Provided, That nothing contained herein may be construed to allow the Department of Health and Human Resources to assume the operation of comprehensive regional mental health centers or comprehensive intellectual disability facilities which have been heretofore established according to law and which, as of the effective date of this article, are being operated by local nonprofit organizations.
(b) Any new mental health centers and comprehensive mental retardation facilities herein provided may be operated and controlled by the Department of Health and Human Resources or operated, maintained and controlled by local nonprofit organizations and licensed according to rules promulgated by the Secretary of the Department of Health and Human Resources. All comprehensive regional mental health and intellectual disability facilities licensed in the state shall:
(1) Have a written plan for the provision of diagnostic, treatment, supportive and aftercare services, and written policies and procedures for implementing these services;