Any provision in any accident or health insurance policy issued by any insurance company denying the insured, in case of accident or sickness, the right to consult or employ any doctor licensed to practice in this state the insured may choose, or to enter any hospital or sanitarium organized and operating under the laws of this state the insured may select is void. The insurance company shall recognize any proof of claim duly certified by such doctor or hospital or sanitarium notwithstanding any provision contained in the policy.