From The New York Times:
Discrepancies on Medical Bills Can Leave a Credit Stain
As patients assume more of the responsibility for costs, complex billing and more aggressive collection by providers are resulting in negative credit report data that lingers for years.
From The New York Times:
Insurers Alter Cost Formula, and Patients Pay More
After compiling a database of customary rates for medical procedures, many insurance companies switched to a calculation based on Medicare rates, meaning higher costs for patients.