Nearly 2 million Californians will receive $73.9 million in rebates from health insurers as part of the federal healthcare law, according to state officials. Insurers notified government regulators in June of how much they owed customers in rebates or premium credits because they didn't spend at least 80% or more of 2011 premiums on medical care. The minimum threshold is 85% for employers with more than 51 workers. Figures released Tuesday mark the final tally for California; insurers must issue refunds by Wednesday. Many employers and consumers have already received letters informing them of their rebate amount. The average rebate is $65 per family, according to the state insurance department.