Sadly, that's not the only part of the equation. Will regulation make it better and/or safer?
Because in my experience (10+ years of software medical device work) FDA regulation of medical devices has reached a point where the cure is now worse than the disease. Innovation is swamped under paperwork that prevents many solutions from coming out that would make medical devices safer or better, but which would cost too much for a company to implement because of FDA rules.
Too often, medical device errors (radiation burns, etc.) are because of human error which could be corrected with a strict checklist, rather than more FDA regulation.
The most likely result of regulating wireless networking in a hospital will be the removal of the wireless network. People will likely schlep data around on USB drives, which are unmarked and untracked, etc. (I've seen that happen before when devices don't have networking capability). In such a scenario are patients protected or endangered?