The Physician Self-Referral Statute, commonly called the Stark Law, prohibits a physician from making a referral to an entity for the furnishing of a designated health service for which payment may be made under Medicare or Medicaid if the physician or an immediate family member has a financial relationship with the entity, unless an exception applies. This being a strict liability law, no proof of specific intent is required. There are strict, complex, and narrowly construed “safe harbors” and exceptions to both the Anti-Kickback and Stark laws, but the field is complex, so providers contemplating health care business deals should proceed cautiously and seek specific advice from experienced legal counsel.