If you just want to know "who's been referred to you by Provider x", then query the ServiceRequests. Group isn't going to help there - and Group doesn't automagically get filled in with members. With Group, you either list the set of characteristics (in which case that's all you get) or you manually maintain the list of members. I don't understand why a provider would ever maintain a Group for the convenience of a performer - when they can just as easily search ServiceRequests

Existing Wording:

This will enable organizations that have permission to easily retrieve information related to the cohort of individuals for which they have a common responsibility

(Comment 147 - imported by: Robert Dieterle)