A physician told me that they like employing NPs in their group because as nurses, they are more comfortable calling a doc for guidance from their time as RNs, and do so appropriately. Thats one opinion, but not really a flattering one for folks that tout NPs being independent.
Overall, what I've found is that it's rare that physicians are in any way preoccupied with the PA or NP profession in the slightest... to the extent that most don't really differentiate. If the market where they are at is PA friendly, they will hire from that labor pool. Med students seem to be up in arms in a few threads about how bad they think NPs will suck based on deductive reasoning rather than any firsthand knowledge, but there you go. Once they are out in the industry counting the cash coming in, the parts of their brains that are now breathlessly consumed with concern over what group to put down will instead be reallocated to figuring out how to retire to the quickest. Because then its like deep down, a large part of the appeal of medicine is the money, but that's not as good an answer as "doing it for the people" or "the challenge". When you sacrifice your 20s and part of your 30s for your career before you see a big payday, that payday might prove to be small compensation given the amount of effort. Then you are left with "desire to serve humanity", but that can be hard to muster after a parade of addicts try to manipulate you all day at work.
That could be why you sometimes hear physicians telling people that they wouldn't encourage folks to get into medicine. The money is good eventually, but a job still feels like a job, and people work to get paid, even the docs.