Sec. 3. As used in this chapter, "office" includes the following:
(1) The office of the secretary of family and social services.
(2) A managed care organization that has contracted with the office of Medicaid policy and planning under this article.
(3) A person that has contracted with:
(A) the office of the secretary of family and social services; or
(B) a managed care organization described in subdivision (2).