Some health insurers offer health benefit plans in which the insurer maintains a list of health care providers. Plan members must use listed providers in order to obtain the maximum plan coverage, or to have coverage at all. "Health care providers" include doctors and other licensed health care professionals, clinics and hospitals.

The initiated measure establishes who is entitled to be on the insurer's list of providers. The measure requires that these insurers list all health care providers who are willing, qualified, and meet the conditions for participation established by the insurer.

The measure does not apply to all health insurers, nor to certain kinds of insurance and plans including those involving specified disease, indemnity, accident only, dental, vision, Medicare supplement, long-term care or disability income, and workers' compensation.