I'll throw in my .02 on this. I'm just a pre-pa person but I worked in the ED with PA's for about five years so I observed a lot and this is one of those scenarios that I was actually surprised to observe.
I once overheard a plastic surgeon tell an ED PA "Put your attending on the phone, I don't talk to PA's." This guy has a real reputation for being a douchebag so I wasn't surprised it was him on the other end. The PA was younger and she was visibly upset about the situation and was crying and trying to laugh it off at the same time. That's one PA's experience. There are three other PA's that worked in the same Fast Track area who were not working that day and if they had taken that call, they would have ripped that plastic surgeon a new one. And I promise you, that plastic surgeon would actually respect those PA's who stood up to him a lot more after an encounter like that. The plastic surgeon was pushing the envelope so to speak and this one PA let him do that. Some people are tougher than others and there's nothing wrong with that but you must adapt to deal with people like this. It's hard to do it in a snap like that but you have to learn how to do it.
The point I'm trying to say is that once you let someone walk over you, they will continue to walk over you and walk over you some more. You have to be firm and be in command of your role at all times. You're the PA, you have been hired for that position, and you have a job to perform; you're not volunteering your services there. It does not matter if some attending or another staff member feels otherwise just because your title is that of a PA and they may or may not understand that title or your role as you feel they should. Who cares what they think, what pull do they have regarding your job and the profession itself? This particular PA, did not stand up to that plastic surgeon and I think she will forever be walked over by that plastic surgeon because of that one encounter. I want to add that when I left the department I heard that particular PA got another job at a Derm group. Good opportunity for her but part of me says she went Derm because she really didn't like the ED environment.
Another quick story that ties into this one...
I was shadowing a bunch of third year MD students once upon a time when I was a pre-med trying to test out the waters of med school. We were in a conference room with a few surgery attendings and everybody was talking about this one particular "person" who was assisting the surgeon we were observing that day. I actually didn't know this "person's" role and I thought they were just another MD but apparently they are an MD back in their home country and they couldn't get licensed or whatever in this country so they were working in the capacity of a surgical PA while not actually being a trained PA. I personally thought this person was actually very mean. He always looked unhappy and he was rude to the students and I didn't think he had the greatest bedside manner but that's besides the point. I also observed him botch a catheter placement into the groin because he didn't do it under US guidance, which I later found out he wasn't trained to do because he didn't learn it that way in his country, but again that is besides the point here.
I remember during that meeting, the student's were asking if he was a PA and one of the surgeon's said he was not a PA. There was another female attending in the discussion and she said "He's DEFINITELY not a PA, his knowledge base is so much more advanced." Those are the discussions that go on behind the scenes when the attendings and even medical students are alone and you're not there. I guarantee you that female attending probably left that conference room and at some point during the rest of the day she smiled at another PA and said "Hi, how are you today?" while secretly judging their "knowledge base."
The point of that story is that this female physician had her mind made up about PA's already for whatever reason. This fake PA guy or whatever you want to call him clearly exceeded her expectations in some capacity and that is why she apparently thought of him or maybe his knowledge base more "highly" I presume. So knowing that's how some attendings might see you for no reason other than your job title, why give them that opinion? Work to the best of your abilities so that they see you as a person and not under the umbrella of a profession that they may or may not understand completely.
I have witnessed the medical hierarchy even in my observational capacity. I don't think that will change because I have seen a lot more doctors with ego issues than I have with doctors who are down to earth and will have a beer with you. When you sign up for this path, I really hope people realize that the hierarchy is a real thing and you have to develop thick skin the lower down you are. I still say reputation wins in the end. So focus more on that.