This document discusses secret provider agreements between payers and providers that prohibit self-funded health plans from directly communicating with providers about billing issues. It summarizes that: 1) Many payers rely on secret provider agreements that prohibit self-funded plans from contacting providers about billing questions or issues. 2) These secret agreements distort discounts, disguise settlements, lead to excess billings and payments, and hide fees, costing self-funded plans more money over time. 3) To regain control over costs, self-funded plans should demand transparency into claims data to identify high-billing providers, use comparative billing reports to find discrepancies, and work with payers willing to support direct communication with providers.