The Tracy/Modesto area is NOT like most of California. Think agriculture (mostly irrigated), farming, migrant workers, LONG commute times if you drive to any cities, congested freeways, bedroom communities, suburbia, small towns, dust, hot sun, dry, dust, reasonably affordable homes (compared to cities), etc. (oh, and did I mention dust and hot sun?).
That might help you narrow down your area of search, as there is no reason to be learning about LA or Eureka, for example, since California is a large and quite varied state. Ask at your local library, do a google search for Tracy/Modesto hospitals to check out opportunities, pay rates, and whatever else you want to know.