The Stark statute and regulations present a host of structuring and operational challenges for most physicians. Radiologists have often believed that they are immune from the implications of Stark since their ordering of diagnostics studies pursuant to a consultation is excluded from the definition of an implicated referral under Stark. However, this does not mean radiologists need not pay attention to the Stark statute. Moreover, many other types of physicians are seeking to engage radiologists in concert with them to deliver imaging services to their patients. Liabilities lurk everywhere. In “Radiologists and Their Business Significant Others: Underappreciated Traps in Stark”, we describe where some of these pitfalls lurk.