Data is Beautiful

Note that Kaiser, Blue Cross Blue Shield, and Caresource are nonprofit. Also, integrated care organizations like Kaiser usually have lower denial rates in large part because the actual treating provider/doctor is an employee of the insurer, so there's not going to be that tug of war between a fee for service provider wanting to make money on a treatment versus an insurance provider trying to deny coverage on that treatment.

Personally, I think integrated care is better, and this is one of the reasons, but I also think this particular statistic isn't an apples to apples comparison between insurers.