JANE B. STRANCH, Circuit Judge. Dr. William Bauer most recently practiced as a Board-certified neurologist in Bellevue, Ohio. He regularly prescribed a high quantity of controlled substances to his patients for pain management. The Drug Enforcement Agency (DEA) investigated Bauer for these prescribing practices, and he was ultimately indicted for unauthorized distribution of controlled substances to 14 of his patients. A jury found him guilty on all counts, and he timely appealed. He raises two issues stemming from the Supreme Court’s intervening decision in Ruan v. United States, 142 S. Ct. 2370, (2022), and two evidentiary issues. Because we find that the district court did not plainly err in instructing the jury regarding the appropriate mens rea and did not otherwise err, we AFFIRM.