Final answer:
A Medicare auditor reviews records for the Centers for Medicare and Medicaid Services, looking for fraud and evidence of overcharging by facilities.
Step-by-step explanation:
The worker who reviews records for the Centers for Medicare and Medicaid Services, looking for fraud and evidence of overcharging by facilities is called a Medicare auditor.
Medicare auditors are responsible for examining medical billing and coding practices to ensure they comply with Medicare regulations. They investigate suspicious claims and work to prevent fraud and abuse in the Medicare system.
Some examples of fraudulent activities that Medicare auditors detect include billing for services not provided, upcoding (billing for a more expensive service than what was provided), and billing for unnecessary tests or procedures.