This week, our In Focus section reviews the Massachusetts Executive Office of Health and Human Services (EOHHS) announcement and call for public comments on a proposal to renew and amend the state’s existing Section 1115 Demonstration waiver. Massachusetts’ current Delivery System Reform Investment Program (DSRIP) waiver is authorized through June 30, 2019, but a key portion of the 1115 demonstration, the Safety Net Care Pool (SNCP), is authorized only through June 30, 2017. Massachusetts proposes to begin the five-year extension of the entire demonstration starting July 1, 2017. The proposed waiver implementation process includes the implementation of Medicaid Accountable Care Organizations (ACOs), a reprocurement of existing Medicaid managed care organizations (MCOs), and greater integration of physical health, behavioral health, and long-term services and supports (LTSS). Public comments on the waiver renewal will be accepted through July 17, 2016.