If an organization has multiple locations and a provider is a member of just one of those locations this issue may occur. It happens when a client is requesting a session from the provider's directory entry and a new client account is created. If you view this new client's account as an admin, you'll notice the correct location of the associated provider is not added to the client's org list.
If you are experiencing this issue, please contact email@example.com
UPDATE: RESOLVED ON 11/1/2017.