So why is he in possession to begin with?
Im glad the bad guy with a gun was stopped by a "good guy" with a gun- but was he a good guy then?
In Michigan, concealed carry in a hospital is a state civil infraction for the first offense. Second offense is a misdemeanor. So... first offense is not a crime. (MCL 28.425o and MCL 750.5) The deadly force statute stipulates not "has not or is not engaged in the commission of a crime." (MCL 780.972)
So... If this was Michigan, it's a good legal shoot. Next one wouldn't be legal. "Bad guy" is determined by public opinion. If this exact situation happened a second time, the court of public opinion would still consider him a good guy.
After reviewing Pennsylvania on
www.handgunlaw.us. No guns signs do not carry force of law and hospital carry is not prohibited. Other than employment issues, I think the doc is good to go.