The in-network healthcare providers don't trust my employer's insurer. So much so, they require full payment up front. At this point, I don't know what in-network even means. I no longer buy it.
I'm told being required to pre-pay is becoming more common in general, apparently as a reaction to insurance companies' new requirements that force a doctor to write follow up "approvals" for Rx's they've written. But this insurer was also recently sued by the federal gov for stealing from the insured.