That came up on my first "free" Medicare physical. Doc is a personal friend, not anti-gun at all. When I questioned the need, he said I had to answer the questions and he had to record the answers as a matter of Federal law in order to use Medicare for a physical. I have trouble lying, so I declined the Medicare physical and have gone seven years without. I now get the equivalent of a physical in bits and pieces - take a look at this, I've been wheezing, maybe we're due for an EKG, etc. I have so many ailments that addressing each one piecemeal is more thorough in sum than a routine physical.
If my records were kept only on paper in the doc's office as they used to be, I'd be OK with anything he asked, but Feds now require computer based record keeping. Next step will be a full Fed snoop on the sly with cross-matching with other agencies, if they're not doing it already.