‘Insurer’ means any insurer or organization authorized pursuant to this title to conduct business in this state that provides or arranges for the provision of health care services, including, without limitation, an insurer that issues a policy of health insurance, an insurer that issues a policy of group health insurance, a carrier serving small employers, a fraternal benefit society, a hospital or medical service corporation, a health maintenance organization, a plan for dental care and a prepaid limited health service organization.