Mo. Rev. Stat. § 334.265: Intoxicated person, motor vehicle accident, treatment for injuries, physician may report to law enforcement agencies, rule of confidentiality not to apply.

Notwithstanding any other provision of law or rule of confidentiality to the contrary, any physician licensed under this chapter who treats a person who appears intoxicated, for injuries sustained in a motor vehicle accident, may immediately report same to a highway patrol officer or local law enforcement agency.