Thanks everyone for responses! Let me start by saying that I'm on the same page with "absolutely not" being my instantaneous response when my man brought it up the other day. Honestly, he lives for getting a rise out of me, and I love proving him wrong, which is probably why I took it as far as I did.
I live in Phoenix, so while gun laws vary from state to state, the information I found pertained specifically to Maricopa County. I started by googling the basic gun laws - in the state of Arizona you can open carry without a permit at the age of 18, and can carry concealed without a permit at 21. Obviously several other criterial have to be met (I.e., no previous felony conviction, never deemed persistently or acutely disabled, or a danger to self or others, etc.), but just about anyone can carry a gun here.
I figured I would have to find hospitals somewhere in the fine print, but I couldn't find it anywhere on the azleg.gov website. The best I could find was this document outlining FAQs pertaining to AZ gun laws:
It contains a list of places that firearm carry is generally prohibited. Two of these bullet points stood out to me as places that could pertain to hospitals:
I believe this would include hospitals such as the VA, and then...
State or local government/private establishments or events when asked by the operator/sponsor/agent. Most government facilities will provide a location to temporarily store a firearm. Persons who refuse to leave and/or secure their weapon are trespassing and can be cited or arrested for ARS 13-1502 or ARS 13-1503, depending on the venue
This would include just about all other hospitals, such as the community hospitals here, or privately owned facilities, such as Mayo Clinic.
So with that information I figured I had my answer - but when I presented it to my gleeful debater, he argued that the Second Amendment, being a federal law, would supersede any local or state laws. Determined to prove him wrong, I continued my research.
I had no idea who to call. I ended up starting with the Attorney General's Office for the State of Arizona. I think I left a voicemail? Honestly I spoke with so many people over the course of the next hour, I forget all my exact steps. Next up, I tried calling the ATF Phoenix Field Office. He suggested I contact the Maricopa County Sheriff's Office, assuming the hospital would be under their jurisdiction. I called MCSO and was transferred to the Department of Public Safety and then transferred again to the Duty Office. The deputy I spoke with told me that it would come down to the policy of that individual hospital, which blew my mind, because I feel like even if there was a well-established policy regarding firearms, I just see placing the firearm in storage and returning it to a patient upon discharge to be a huge liability in and of itself. A million different circumstantial questions come to mind thinking of that situation. Anyways, the officer told me that they would leave it to be resolved between the hospital and the gun-wielding patient, and that was the best answer I could get.
In the end, my stubborn boyfriend continued to argue that in the event he was awaiting admission in the ER and was denied care, or care was delayed because he had a firearm on him, he'd have a winning lawsuit. I told him that I see what he's getting at, but if this was the case, and every patient was armed, there'd be a whole lot less nurses in this world.