Personal Information About Myamme Can Your Phys. Doctor Tell Another Doctor Personal Information About Your Counseling Sessions?

Can your phys. doctor tell another doctor personal information about your counseling sessions? - personal information about myamme

My sister has just learned that his doctor told him Nuero Phys. Doctor treats your personal information in a private therapy session. Givin information had nothing to do with reciving better for his daughter. According to the laws of privacy this is legal?