Missouri Revised Statutes Title XXXVIII. Crimes and Punishment; Peace Officers and Public Defenders § 578.350. Medical deception--penalty--immunity, when

1. A person licensed under chapter 334 or 335 who treats a person for a wound inflicted by gunshot commits the infraction of medical deception if he or she knowingly fails to immediately report to a local law enforcement official the name and address of the person, if known, and if unknown, a description of the person, together with an explanation of the nature of the wound and the circumstances under which the treatment was rendered.

2. A person licensed under chapter 334 or 335 who, in good faith, makes a report under this section shall have immunity from civil liability that otherwise might result from such report and shall have the same immunity with respect to any good faith participation in any judicial proceeding in which the reported gunshot wound is an issue. Notwithstanding the provisions of subdivision (5) of section 491.060, the existence of a physician-patient relationship shall not prevent a physician from submitting the report required in this section, or testifying regarding information acquired from a patient treated for a gunshot wound if such testimony is otherwise admissible.