I have traveled, extensively , mostly chronic, but also acute dialysis. And the two best agencies I have worked for are Foundation Medical Staffing and Quik Travel Staffing. I recommend Margaret Lavender and Mae Reyes, respectively. AHS RenalStat seems to have a few more jobs listed at the moment, but they seem to low ball on money every time. FMS & QTS will negotiate and ultimately give you better pay packages especially in California.