To describe the impacts of four Veterans Health Administration (VA) Quality Enhancement Research Initiative (QUERI) projects implementing an evidence-based lifestyle intervention known as the Diabetes Prevention Program (DPP). 2012-2024 VA administrative and survey data. This is a summary of findings and impacts from four effectiveness-implementation projects focused on in-person and/or online DPP across VA sites. Patient demographics, participation data, and key findings and impacts were summarized across reports from the VA Diabetes-Mellitus Quality Enhancement Research Initiative (QUERI-DM) Diabetes Prevention Program (VA DPP) Trial, QUERI-DM Online DPP Trial, the Enhancing Mental and Physical Health of Women through Engagement and Retention (EMPOWER) QUERI DPP Project, and EMPOWER 2.0 QUERI Program. Between 2012 and 2024, four VA QUERI studies enrolled 963 Veterans in DPP across 16 VA sites. All participants had overweight/obesity with one additional risk factor for type 2 diabetes (i.e., prediabetes, elevated risk score, or history of gestational diabetes) and 56% (N = 536) were women. In addition to enhancing the reach of and engagement in diabetes prevention services among Veterans, these projects resulted in three key impacts as follows: (1) informing the national redesign of VA MOVE! including recommendations to increase the number of MOVE! sessions and revise guidelines across 150+ VA sites, (2) enhancing the national evidence base to support online DPP delivery options with citations in national care guidelines outside VA, and (3) demonstrating the importance of gender-tailoring of preventive care services by and for women Veterans to enhance engagement in preventive services. Over the past decade, the evolution of VA QUERI DPP projects increased the reach of and engagement in diabetes prevention services among Veterans, including women Veterans who have been harder to engage in lifestyle change programs in VA, and resulted in three key impacts informing type 2 diabetes and obesity prevention efforts within and outside of VA.