I would further add from pharmacy that there are strong sanctions such as codes of ethics and professional standards of practice that require that in law. Certainly colleges of pharmacy are extremely strict in terms of enforcement.
There's an added important piece to be considered with respect to pharmacies because of our location in the community. Pharmacists are probably the most accessible health care providers. Unlike my colleagues, you don't have to book an appointment to see one of my members. They are very accessible. If a community pharmacy is known not to treat information in a confidential manner, the word soon goes around the community and that pharmacy is essentially out of business. So there's an additional sanction over and above the strict legislation that applies from a College of Pharmacy perspective that is enforced by the local community.