As of October 2011 , approximately 613,000 people were covered by BCBSMA under the AQC model ( roughly two - thirds of BCBSMA members in health maintenance organizations ) .
The model had not been applied to policyholders in preferred provider organizations .
As of October 2011 , approximately 613,000 people were covered by BCBSMA under the AQC model ( roughly two - thirds of BCBSMA members in health maintenance organizations ) , but the model had not been applied to policyholders in preferred provider organizations .