Whenever it appears to the commissioner that any person has committed a violation of this chapter which makes the continued operation of an insurer contrary to the interests of policyholders or the public, the commissioner may, after giving notice and an opportunity to be heard, determine to suspend, revoke or refuse to renew such insurer’s license or certificates of authority to do business in this state or both for such period as he finds is required for the protection of policyholders or the public. Any such determination shall be accompanied by specific findings of fact and conclusions of law.