Wis. Stat. § 632.99: Certifications of disability.

For the purpose of insurance policies that they issue, every insurer doing a health or disability insurance business in this state shall afford equal weight to a certification of disability signed by a physician with respect to matters within the scope of the physician’s professional license, to a certification of disability signed by a chiropractor with respect to matters within the scope of the chiropractor’s professional license, and to a certification of disability signed by a podiatrist with respect to matters within the scope of the podiatrist’s professional license. This section does not require an insurer to treat any certification of disability as conclusive evidence of disability.