A statement that your insurance company sends that summarizes the costs of the health care services you received. This is not a bill. An EOB shows how much your health care provider is charging your insurance company and how much you may be responsible for paying. Closely review your EOB to make sure that it only includes services that you received, and that the amount you owe is consistent with your health insurance benefits. Contact your health insurance company if you notice a billing error or have any questions.