Bullbleep--any self-respecting gun-owning parent already knows this FAR better than any physician (unless the physician is also a gun-owning parent). There is NO reason for ANY physician EVER to ask this question.
There are a lot of gun-owners out there who don't practice adequate gun safety.
I'm really not sure why there needs to be a government solution to this problem. Like I said, if a doctor is too nosy, get another doctor.