DaVita Health Portal (DHP) login access. 08-02-2013, 07:16 PM. I have been accessing the Davita website at home and at times while I am at the Davita Dialysis center. Most of the time I have no problems with the navigation of the site. The main problem I have is when I try to go to the DHP to log in, it always asks for an answer to a security ....