(a) All benefits under any blanket accident and sickness policy shall be payable to the person insured, to his designated beneficiary or beneficiaries, or to his estate, provided that if the person insured is a minor or mental incompetent, the benefits may be made payable to his parent, guardian, or other person actually supporting him or, if the entire cost of the insurance has been borne by the employer, the benefits may be made payable to the employer.

(b) The policy may provide that all or any portion of any indemnities provided by any policy on account of hospital, nursing, and medical or surgical services may, at the insurer's option, be paid directly to the hospital or person rendering the services; but the policy may not require that the service be rendered by a particular hospital or person. Payment so made shall discharge the insurer's obligation with respect to the amount of insurance so paid.