When I was looking into graduate programs (a few years ago), PA schools
expected some (large) number of clinical hours before applying. NP programs may be direct entry, where some students won't have ANY nursing experience before they become an NP. I don't have a big opinion btw NP and PA, but you'll want to make sure you know the requirements, because both are hard to get into.
More importantly, I'm sorry you are working in what sounds like a toxic environment, but unfortunately, that can happen anywhere. I have seen surgeons TOTALLY disrespect the anesthesiologists they work with. Yes, fellow docs who have gone through piles of school just like they did. There are jerks everywhere. If the hospital or unit has management or staffing issues or a hands-off approach to horizontal abuse, you may just want to find another place to work. In other words, don't go looking for the job where you think people will have to respect you. As Bob Dylan once said, "You may learn how to cut hair... you may be somebody's mistress... may be somebody's heir... but you gotta serve somebody!"