1. HIPAA doesn't apply to you unless you're an employee of a covered entity, that is, a health care provider, health care plan, or a firm contracted by a member of the previous two categories to handle billing. You can hand out your private medical information to whomever you want without worrying about HIPAA.
2. Even if HIPAA did, it doesn't give you the power to refuse to disclose HIPAA data when such disclosure is required by law[1].