As per PDEX discussion.   Make proposed change. This requires profiling R4 instead of USCore resource for Plan-Net. Where US Core PractitionerRole has cardinality of 1..1 for Practitioner and Organization therefore to meet the requirements of the Payer Provider Directory IG PractitionerRole will be profiled from the base R4 resource. Profiling PractitionerRole to set Practitioner to 0..1 to allow a role definition without assigning to a specific practitioner Organization to 0..1 to allow an individual practitioner that does not have an organization with an NPI. Changing terminology and value sets to meet US Provider Directory needs. Include a modification of the diagram from the VHDir that illustrates how practitioners (via PractitionerRole) and organization Providers (via Organization Affiliation) express their capabilities.