The doctor violated the hospital’s no gun policy?
Apparently so, and a good thing he did. Let's see 1. complies with policy and dies or 2. violates policy and lives. Which one would a corporate executive choose? (1 of course, but for the employees, not him/herself).
On a similar topic I noticed that a great many businesses include the grocery "Sprouts" locally have posted no firearms signs. Yep that will work. Someone intent on robbing the place will stop and turn around when they see the no firearms sign.
A lot of docs carry and/or keep guns in their desks. The rules be damned. Docs and other staff have to deal with violent patients all the time. The docs can carry cause the hospital will look the other way.