Still a little off the original topic, I was a participant in the Bureau of Labor Statistics this year and gave my occupation as PA. They asked for my daily duties including "assisting the physician". I refused to pick that one and said "there is no physician at work to assist". I work in one of the states that has switched to "collaboration". I like "collaboration" much better and it is more descriptive of our relationship.
I've kept my social work license too. It's nice to have on the rare occasion I have to detail some psychiatric issue that is outside the scope of my usual PA job. I can also see myself transitioning into a psych PA job towards the end of my career and that would be helpful.