On December 31, 2018, the Centers for Medicare and Medicaid Services (CMS) published a final rule (Final Rule) establishing the “Pathways to Success” program that overhauls the Medicare Shared Savings Program (MSSP). The Final Rule largely mirrors CMS’ proposed rule (see our summary here), but with several modifications in response to public comments. Accountable care organizations (ACOs) may participate in the Pathways to Success program beginning July 1, 2019, and those ACOs interested in beginning participation in July must submit to CMS a notice of intent to apply by …