On October 9, 2019, the Centers for Medicare & Medicaid Services (CMS) issued a proposed rule to modernize and clarify the regulations that interpret the Medicare physician self-referral law (often called the “Stark Law”), which has not been significantly updated since it was enacted in 1989. As CMS tries to reconstruct the healthcare field, it is imperative for compliance programs to prepare for the changes in regulations to come. The following discussion provides a brief overview of the proposed changes but is not an exhaustive list of all rulemakings related to the physician self-referral law.