In group disability insurance policies there shall be a provision that the insurer shall issue to the employer, the policyholder, or other person or association in whose name such policy is issued, for delivery to each insured employee or member, a certificate setting forth in summary form a statement of the essential features of the insurance coverage, and to whom the benefits thereunder are payable described by name, relationship, or reference to the insurance records of the policyholder or insurer. If family members are insured, only one certificate need be issued for each family. This section shall not apply to blanket disability insurance policies.