A Quality Improvement Organization (QIO) is a group of practicing doctors and health care experts organized to improve the quality of care given to Medicare beneficiaries. QIOs address complaints about quality of care and review appeals for both Original Medicare and Medicare Advantage when you disagree with a provider’s decision to end your care. You have the right to file a fast (expedited) appeal to the QIO to extend your care when Medicare denies coverage or terminates the services you are receiving from a hospital, skilled nursing facility (SNF), Comprehensive Outpatient Rehabilitation Facility (CORF), hospice, or home health agency.