06/23/2026
The HHS OIG found widespread ghost network errors in managed care directories from Centene, , and , including in-network providers listed incorrectly, missing providers, and inaccurate contact information across maternal health plans in multiple states. In some cases, up to 22% of listed providers were not actually in-network, and as many as 35% of in-network providers were missing from directories. The agency warned these errors can delay or block prenatal and postpartum care, worsen maternal health outcomes, and potentially mislead patients when choosing plans. OIG is urging CMS to strengthen oversight and hold insurers accountable for accurate provider directories.