Except as provided in subsection (d) and otherwise provided in this chapter, the insurance laws and hospital or medical service corporation laws shall not apply to the activities authorized and regulated under this chapter of any health maintenance organization granted a certificate of authority under this chapter. This chapter shall not apply to an insurer or hospital or medical service corporation licensed and regulated pursuant to the insurance laws or the hospital or medical service corporation laws of this State except with respect to its health maintenance organization activities authorized and regulated pursuant to this chapter.