Final answer:
The federal privacy regulation that protects personal health information and regulates with whom a health care provider can share the information is the Health Insurance Portability and Accountability Act (HIPAA).
Step-by-step explanation:
The federal privacy regulation that protects personal health information and regulates with whom a health care provider can share the information is the Health Insurance Portability and Accountability Act (HIPAA). HIPAA sets the standards for the protection of patient information and requires businesses and health care providers to maintain strict confidentiality of patient records. This regulation ensures that patients' personal health information is kept private and limits the sharing of that information to authorized entities.