For the purposes of this act:
(a) "Commissioner" means the commissioner of insurance.
(b) "Utilization review" means the evaluation of the necessity, appropriateness and efficiency of the use of health care services, procedures and facilities.
(c) "Utilization review organization" means any entity which conducts utilization review and determines certification of an admission, extension of stay or other health care service.
(d) "Health care provider" means a licensed medical care facility, a licensed health maintenance organization, or a person licensed or registered to engage in an occupation which renders health care services.