Upon the merger of a medical service corporation into a hospital service corporation, the surviving corporation shall qualify as a health service corporation, and the surviving corporation need not obtain a new charter or certificate of authority to act as a health service corporation, provided that:
a. The board of directors of the surviving corporation is constituted pursuant to the provisions of section 6 of this act; and
b. The certificate of incorporation of the hospital service corporation is amended, within 30 days of the merger, in accordance with the provisions of this act; and
c. The bylaws of the hospital service corporation are amended, within 30 days of the merger, in accordance with the provisions of this act; and
d. Evidence of compliance with subsections a., b., and c. of this section is filed with the Commissioner of Insurance.