1 year. It was also a 1 year limit on when they could collect the bill if it wasn't billed to my insurance. Not sure if that would've counted, since the hospita

1 year. It was also a 1 year limit on when they could collect the bill if it wasn't billed to my insurance. Not sure if that would've counted, since the hospital had my insurance and technically I didn't give it directly to the independent doctor, but the only reason they billed my insurance days before it hit a year is because I was crazy persistent and proactive about getting to the bottom of this. Next time I'll let more of the burden of proof remain on them longer. This is all under Colorado law, btw.