CMS Pub. 100-08, ch. 10, § 10.6.11

General Information

(Rev. 13355; Issued: 08-13-25; Effective: 05-05-25; Implementation: 05-05-25)

All providers/suppliers must choose to be either Par or Non-Par when initially enrolling and must

maintain the same Par status across all lines of business.

Individual physicians and non-physician practitioners who reassign benefits to a clinic/group

practice inherit the Par status established by the clinic/group practice. However, if the individual

physician or non-physician practitioner maintains a private practice (separate from the

reassignment of benefits agreement), the physician/practitioner may designate the

physician/practitioner’s own Par status. See Publication 100-04, chapter 1, section 30 for

guidance on applying the correct Par status to clinic/group practices, organizations, and

individuals in private practice.

The contractor shall follow the instructions in CMS Publication 100-04, chapter 1, sections 30

through 30.3.12.3 when handling issues related to par agreements and assignment. Queries

related to the interpretation of such instructions shall be referred to the responsible CMS

component.

Physicians and Part B organizations should be entered as Par in PECOS based on the submission

of a signed Form CMS-460 (Medicare Participating Physician or Supplier Agreement) upon

initial enrollment or during a change to their Par status during the annual Medicare Open

Enrollment period. Non-Physician Practitioners that are considered mandatory participation and

individual physicians and non-physician practitioners that reassign all of their benefits to a Par

organization should not be entered as Par in PECOS.