The providers of a educating doctor should be billed by the institutional provider when the physician is employed by the provider or a related entity or under a contract which supplies for cost to the physician by the provider or a associated entity. Where the instructing physician has no relationship with the supplier and generally treats sufferers on a fee-for-service basis in the non-public sector, the teaching physician could submit claims underneath his/her own provider number. Review of claims for therapy of psychological dysfunction.