Iowa Code § 514.2A

A nonprofit health service corporation authorized to do business in this state shall file in the office of the commissioner a power of attorney and an agreement in writing that service of process in any action or proceeding against the corporation may be made on the commissioner and shall be of the same legal force and validity as if made upon the corporation, and that the authority shall continue in force so long as any liability remains outstanding in this state. A copy of the power of attorney, certified by the commissioner, shall be deemed sufficient evidence of the appointment and shall be admitted in evidence with the same force and effect as the original. Service of process made on the commissioner as the attorney for service of process shall be made as provided in section 505.30.