Hello naz22o.. and CONGRATS, New Grad!!!
Not sure about Davita, but FMC pays according to geographical area.. comprable to what the going rate is for RNs in your area.. perhaps a tad less due to Medicare reimbursement issues.
So what I would make HERE would be FAR LESS than what you could expect in NJ. That's all I know to tell you.. perhaps someone else will come along who might have a better idea of what the NJ pay rate might be.
Wish you luck.