Administrator or nursing home administrator means any individual who meets the education and training requirements of section 38-2419 and is responsible for planning, organizing, directing, and controlling the operation of a nursing home or an integrated system or who in fact performs such functions, whether or not such functions are shared by one or more other persons. Notwithstanding this section or any other provision of law, the administrator of an intermediate care facility for persons with developmental disabilities may be either a licensed nursing home administrator or a qualified developmental disabilities professional.