As a psychologist, his professional ethics stipulates that he must keep a secret. It is illegal for him to disclose some problems of patients, and his personal privacy is public. If the circumstances are serious, criminal responsibility will be investigated.
As a psychologist, even from the perspective of economic interests, he should keep secret, and the patient's condition has been told. Who saw him later, no one consulted him, and there was no income. What does he support himself with? So don't worry, he must keep it a secret only from his own interests.