Privacy of what patient information is protected by law? Address and telephone number
Diagnosis
Identity
Both diagnosis AND identity
I

Both diagnosis AND identity

Explanation:

The doctor is prohibited by law to share and information about the patient that discloses their identity or their diagnosis. If the patient chooses even the parents can not be told by the doctor what is wrong with the teenager. The doctor or psychologist can only share information if the patient gives them permission and this is done by changing the name of the patient so nobody can know who really had the diagnosis in question.