What characterizes a provider who agrees to accept assignment for Medicare Part B services?

A provider who agrees to accept assignment for Medicare Part B services is characterized by their commitment to accept the Medicare-approved amount as full payment for their services. This means that they cannot bill patients for the difference between what Medicare pays and the provider's usual charges, which is why the third option is correct.

When a provider participates in Medicare and accepts assignment, they agree to accept the reimbursement rate set by Medicare as the complete compensation for the services rendered. This arrangement also helps to keep patient costs lower, as patients are only responsible for applicable deductibles and copayments, without facing additional charges from the provider.

In contrast, providers who are nonparticipating have the option to charge higher fees than the Medicare-approved amount and can balance bill patients for the excess charges, which is not permissible for those accepting assignment. This key difference in billing practices highlights the significance of accepting assignment and how it impacts patient costs and provider reimbursements.