I did all my clinicals at Health First, and did get one interview there for the RN Residency back in February (didn't get the job). They don't have a set number of new grads that they hire each month. They screen the apps, then forward the qualified ones to unit managers that have openings for new grads. Some months, they may hire 5-6 system wide, other months maybe only 2-3. They do put a posting up every month though, so keep trying.
I don't see the new one on there yet. They don't always post it on the first week, sometimes the second week. I just always checked like every other day until it posted, then applied. You drop down to registered nurse, then the second search box, pick graduate nurse. Good luck!