As a medical reviewer, your primary responsibilities are to review medical records to ensure accuracy. You address any issues or errors that you find with your supervisor’s assistance and contact medical providers to update information about patients. You may also audit medical files to determine whether the medical provider’s documentation complies with all federal and state regulations that affect accreditation, or if the facility qualifies for specific federal funding or participation in programs like Medicare. Medical reviewers most commonly work for an internal department at a hospital, medical care facility, or an outside organization, such as an insurance company or government agency.