215 ILCS 125/4-19
Current through Public Act 103-593
A health maintenance organization may not require a provider, as a condition of participation in the health maintenance organization's health care plan, to purchase ophthalmic goods or services, including but not limited to eyeglass frames, in a quantity or dollar amount in excess of the quantity or dollar amount an enrollee purchases under the terms of the health care plan.
215 ILCS 125/4-19