(1)    Except as provided in sub. (1m), one or more natural persons licensed, certified, or registered pursuant to any provisions of the statutes, if all have the same license, certificate, or registration or if all are health care professionals, may organize and own shares in a service corporation. A service corporation may own, operate, and maintain an establishment and otherwise serve the convenience of its shareholders in carrying on the particular profession, calling, or trade for which the licensure, certification, or registration of its organizers is required.

   (1m)   A service corporation for carrying on the profession of certified public accounting may be organized under sub. (1) if more than 50 percent of the shareholders are certified public accountants.

   (2)   Professional or other personal services, consultation or advice in any form may be rendered only by directors, officers, agents or employees of the service corporation who are licensed, certified or registered pursuant to statute in the field of endeavor designated in the articles of incorporation of the service corporation.

   (3)   Liability may not accrue to a service corporation or its shareholders solely as a result of a decision to organize under sub. (1) or solely as a result of a decision to include or exclude a category of health care professionals as eligible to become shareholders of the service corporation.

   (4)   Each health care professional, other than a physician or nurse anesthetist, who is a shareholder of a service corporation and who has the authority to provide health care services that are not under the direction and supervision of a physician or nurse anesthetist shall carry malpractice insurance that provides coverage of not less than the amounts established under s. 655.23 (4).