This is really a health care question not a malpractice question. Although, he/she probably violated your rights to privacy, it is probably not actionable.
It is hard to know what was said. Other healthcare providers discuss cases with each other to help patients, not to hinder them. If she did not use your name, but was speaking generally, it may have been to get advice to help you. Either way, I agree that it is not actionable.
Yes, presuming that someone else isn't the physician involved with your care and treatment. Bear in mind that a HIPAA violation does not necessarily provide you with a private cause of action.
The federal HIPAA law does not provide for an individual to recover damages for a violation. The Secretary of health can seek a fine for a violation.