What is the name of the private firm that processes Medicare claims?

The correct answer is Medicare administrative contractor (MAC), as MACs play a crucial role in the Medicare program. These private firms are responsible for processing claims, making payment determinations, and conducting audits for Medicare services. They act as intermediaries between Medicare beneficiaries and healthcare providers, ensuring that claims are handled efficiently and accurately.

MACs perform multiple key functions, including processing Medicare Part A and Part B claims, overseeing provider enrollment, and providing education and assistance to healthcare providers regarding Medicare policies. This system allows for improved efficiency in claims processing and management, streamlining the operations of Medicare services.

Other options do not accurately describe the current entities or functions related to Medicare claims processing. Fiscal intermediaries, mentioned in one of the choices, were historically used for processing claims but have largely been replaced by MACs in the current structure of the Medicare program. This shift emphasizes the MAC's centralized role in administering the claims process for Medicare, making them the correct answer to the question.