The Ovarian Cancer IMPACT Act strengthens federal efforts to improve awareness, prevention, and treatment of ovarian cancer, with particular focus on genetic testing and hereditary cancer risk assessment. The legislation reauthorizes and expands an existing public awareness campaign called Johanna's Law, requiring targeted outreach to high-risk populations including rural and underserved communities, and establishing new demonstration projects to test strategies for improving access to genetic counseling, testing, and specialty care. The bill requires health insurance plans to cover genetic counseling and testing for people with ovarian cancer history, endometrial cancer history, or family histories suggesting hereditary cancer syndromes, as well as coverage for evidence-based risk-reducing interventions and early detection services. The legislation authorizes $20 million annually from 2027 through 2031 for the expanded public health campaign and demonstration projects, and requires the Department of Health and Human Services to submit an implementation plan within 180 days and progress reports every three years through 2032. The new insurance coverage requirements take effect one year after the bill is enacted.