The director of health, board members, the collaborative practice committee, and their agents and employees shall be immune from suit in any action, civil or criminal, based on any disciplinary proceeding or other official act performed in good faith in the course of their duties under this chapter. There shall be no civil liability on the part of, or cause of action of any nature against, the board, director, their agents or their employees or against any organization or its members, peer-review board or its members, or other witnesses and parties to board proceedings for any statements made in good faith by them in any reports, communications, or testimony concerning an investigation by the board of the conduct or competence of any licensee under this chapter.