Capping doctor's salaries at $100,000 is probably a bad idea. Some cap might make sense, but definitely not $100,000.
$100,000 may sound like a lot, but keep in mind that US doctors take on a lot of debt -- both actual and in terms of opportunity cost. And they also take on a lot of personal risk up until the point where they become doctors. And sometimes even after thatn.
So you're not really saying that should make "around what a software dev makes". You're actually saying that doctors should make significantly less than your average software developer.
Driving smart and driven people away from medicine doesn't seem like a great idea.