My doctors staff called to let me know that my sti stream results are negative, isnt that illegal? letting staff know my privacy? what if it was + ?

It's a team approach: The clinic is a team of people, and everyone is on a "need to know" basis. Team members try to handle only the data that they need, to take care of patients. If a patient wants only his doctor to contact him, that may mean more expensive appointments for that patient, because doctor time is rather valuable. For serious diagnoses, such as cancer, the doctor is the one who delivers you the news.