A violation of Stark Law occurs when:

A violation of Stark Law occurs when there is a financial relationship between a physician and a referral entity that influences the physician's referrals for designated health services. This law is designed to prevent conflicts of interest and self-referral situations where physicians may refer patients to facilities in which they have a financial interest.

When a physician's family has a financial relationship with a referral entity, it raises concerns because it can lead to improper referrals, potentially resulting in increased healthcare costs and unethical decisions made in the interest of personal financial gain rather than patient care. Therefore, the presence of such a financial relationship directly contravenes the principles established by Stark Law, making this scenario a clear violation.

In contrast, simply paying for hospital meals, having patients referred to any specialist, or changing an insurance plan does not inherently involve the financial interests that Stark Law aims to regulate. Thus, those situations do not meet the criteria for a violation of this law.