Mo. Rev. Stat. § 197.700

In the selection of medical staff members licensed under chapter 334, no medical staff bylaws, departmental bylaws or hospital licensed under this chapter shall discriminate against any practitioner of the healing arts who holds a license to practice medicine and surgery in this state for reasons based solely upon the practitioner's branch of the healing arts or the school or health care facility in which the practitioner received medical schooling, postgraduate training or certification if such medical schooling or postgraduate training was accredited by the American Osteopathic Association or the American Medical Association. Each applicant for medical staff membership shall be considered on an individual basis pursuant to objective criteria applied equally to each applicant.