So far, from what I have heard I do not think that people actually receive bills for Hatzolahs services or even for copays.
They do receive an EOB (explanation of benefits) from the insurance company, that lists how much the insurance company will pay and what is the patient’s responsibility.
Yet, from what I have heard, no one receives any bill for anything from Hatzolah or from the billing companies they are contracted.
Also, from the patients perspective, nothing has changed, members are still volunteers, they are not required to collect insurance or payment information, just as until now the members managing the call are the ones deciding on treatment or transport decision.
This is why Hatzolahs have rabbonim that give guidance to avoid decisions that are not in the favor of the patient.