How do hospitals in San Diego handle their promotion structure????

I'm curious for anyone that works at Scripps, Sharp, Kaiser, etc hospitals how often you are reviewed for raises? For example, if you start as a new grad at lets say 27-28/hr., how long until you are up for a raise and if your review is approved, how much pay increase is there? Is it a percentage, a dollar an hour or what? I would love your feedback. I am trying to figure this out in comparison with the raise structure of the VA, military hospitals in town which start you out at a lower salary but move you up several times within the first year versus a civilian hospital where you start much higher hourly???