Hello, mark2climb and welcome to allnurses.com
There is MUCH discussion in these threads regarding the differences/similarities of the NP and PA, including clinical as well:
http://allnurses.com/forums/f34/diff...pa-164046.html
http://allnurses.com/forums/f34/clin...pas-83016.html
We hope you enjoy the site and good luck with your decision(s).