Reducing maternal morbidity and mortality continues to be a patient safety priority in the United States. The article describes the implementation of a quality improvement initiative in Ohio to improve outcomes for patients with a severe hypertensive event during pregnancy or postpartum. Among 29 participating hospitals between July 2020 and September 2021, the researchers identified sustained improvements in timely and appropriate treatment for severe hypertension, timely follow-up appointment after hospital discharge, and patient education about urgent maternal warning signs across both non-Hispanic Black and White pregnant or postpartum people.