Notwithstanding any other provisions of this chapter, a medical service corporation created pursuant to this chapter may contract with persons, firms, corporations, and governmental agencies otherwise authorized by law to provide to the beneficiaries of the contracts a system of comprehensive health care and may contract with providers of health care upon such terms and subject to such limitations as the medical service corporation deems likely to provide comprehensive health care to the beneficiaries on an economical basis, provided that the form of the contracts shall be first submitted to the Commissioner for his approval.