Who is the largest healthcare purchaser and a driver of APM adoption?

• A. Hospitals
• B. Medicare
• C. Private employers
• D. Private insurers

Answer: (B)

The main idea is that a single, large payer can shape how care is financed across the system. Medicare is the largest healthcare purchaser in the United States, covering a vast and diverse population of seniors and certain disabled individuals. Because of its size, Medicare has enormous purchasing power and heavily influences how providers get paid.

Medicare uses and promotes Alternative Payment Models to move away from traditional fee-for-service toward value and quality. Through programs like the Medicare Shared Savings Program for Accountable Care Organizations and various bundled payment initiatives, Medicare designs payment rules, rewards quality and efficiency, and tests new ways to share risk with providers. These moves create nationwide incentives for providers to change their practices, which then influences other payers to follow suit.

While hospitals, private employers, and private insurers are important players in value-based care, Medicare’s scale and policy levers make it the primary driver of APM adoption across the health system.