(1) Notwithstanding any other statutory provision, individual personal information in the records of the department is not a public record and shall not be disclosed, unless:
(a) The information is requested by the person whose record contains the information or by the duly authorized representative of the person;
(b) The information is requested by a public employee for use in the discharge of the employee's official duties;
(c) The information is required to be disclosed under a court order duly obtained upon a showing to the court that the information is relevant to a pending court action; or
(d) The information is required to be disclosed for the proper administration of the department or to assist in locating participants or beneficiaries the department is otherwise unable to contact.
(2) Notwithstanding sub. (1) medical records may be disclosed only when a disability application denial is appealed or under a court order duly obtained upon a showing to the court that the information is relevant to a pending court action but medical information gathered for any one of the benefit plans established under this chapter may be used by any other benefit plan established under this chapter.
(3) The department shall not furnish lists of participants, annuitants or beneficiaries to any person or organization except as required for the proper administration of the department.