It really depends on what you want to do - what kind of healthcare you want to practice.
There are plenty of great websites outlining the PA career - do a google search.
has a PA forum, and I know there is an entirely separate website, complete with forums, dedicated to PA's... but I don't know the address.
I've heard of PA's referred to as "physician extenders." Similar to an NP, but not quite the same....
I think most of the PA schools now are Masters level programs. Are you sure your advisor was referring to this type of PA and not something else?
Good luck deciding!