In every instance in which a policy or contract of malpractice insurance is canceled by the insurer, the insurer or its duly authorized agent shall cite within the written notice of the action the allowable reason in section two of this article for which the action was taken and shall state with specificity the circumstances giving rise to the allowable reason cited. The notice of the action shall further state that the insured has a right to request a hearing, pursuant to section five of this article, within thirty days.