(a) No contract or evidence of coverage for basic health care services delivered, issued for delivery, renewed or amended by a Health Maintenance Organization shall exclude coverage for emergency transportation by ambulance. For the purposes of this Section, the term “emergency” means a need for immediate medical attention resulting from a life threatening condition or situation or a need for immediate medical attention as otherwise reasonably determined by a physician, public safety official or other emergency medical personnel.
     (b) Upon reasonable demand by a provider of emergency transportation by ambulance, a Health Maintenance Organization shall promptly pay to the provider, subject to coverage limitations stated in the contract or evidence of coverage, the charges for emergency transportation by ambulance provided to an enrollee in a health care plan arranged for by the Health Maintenance Organization. By accepting any such payment from the Health Maintenance Organization, the provider of emergency transportation by ambulance agrees not to seek any payment from the enrollee for services provided to the enrollee.