NonPAR providers decide whether to accept assignment on a ________ basis.

NonPAR (non-participating) providers have the flexibility to accept or decline Medicare assignment for each individual service or claim. This means that for every specific service rendered, a nonPAR provider can choose to accept the Medicare-approved amount as full payment (accepting assignment) or may choose to bill the patient directly for any amounts exceeding Medicare's reimbursement (not accepting assignment).

By handling assignment on a claim-by-claim basis, nonPAR providers can evaluate the specifics of the patient's situation, the nature of the service provided, and their own financial arrangements at that point in time. This provides them the opportunity to better manage their billing processes and set policies for patient charges based on their own business practices and the particular circumstances surrounding each claim. This flexibility is key to understanding how nonPAR providers interact with Medicare and their patients.