Be careful about paying bills from Quest Diagnostics. Both my husband and myself have been "balance billed" by Quest for labwork. Quest is a preferred provider for both our insurance companies. Our insurance companies secure deep discounts from Quest for services (ex. insurance pays $30 when Quest billed for $310). Quest is not happy about this despite the fact that they freely enter into these contracts with the insurance companies when they agree to be preferred providers. My insurance company has a co-insurance amount for... read full review »