(a) A medical service corporation shall have the right to provide to its subscribers part or all of the following services and benefits only:
(1) medical and surgical services furnished to the subscriber by participant providers;
(2) indemnity in reasonable amount with respect to medical and surgical services furnished to the subscriber by nonparticipant providers, but subject to AS 21.87.070(4);
(3) indemnity in reasonable amount with respect to hospital services furnished the subscriber while under the care and treatment of a participant provider or under the care and treatment of another provider upon referral by a participant provider;
(4) indemnity in reasonable amount with respect to appliances, prosthetics, and similar devices and replacements, and ambulance, x-ray, physiotherapy, and similar services.
(b) This section does not prohibit the corporation from acting as compensated servicing agent as to health care services to be provided by a public agency, or under agreements between other parties not solicited by the corporation.