Two West Coast-based nonprofit health insurers — SCAN Health Group and CareOregon — recently announced a joint effort to help pay off medical debt in their regions. But the leaders of both companies acknowledge it isn't enough to impact the burden of health care costs on the American population. The problem will only be solved, the company CEOs told Yahoo Finance in a recent interview, when insurers and medical care providers unravel the country's knotty billing system. "We've normalized the...