Yeah, sounds like collections based which isn't uncommon, but has its faults as well. Definitely check if the volume is there and what YOUR patients payor mix will be, would suck if they made you see all medicare patients while others got the higher paying private insurance patients. I'd also wonder if they'd include the technical component as part of your collections, for procedures primarily, or only the professional, I'd assume it's the former but it can be a huge difference. But 50% is fine, they're basically saying they'll take half your earnings to pay overhead, which is about industry average.