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Ambetter and Centene: About Us | Ambetter Health
About Centene
Transforming the health of the communities we serve, one person at a time.
Ambetter Health and Centene
Ambetter Health is Centene Corporation’s health insurance offering available on the Health Insurance Marketplace, which was established by the Affordable Care Act. Delivered through local health plans, Ambetter Health is designed to meet the needs of individuals and families who may not have access to employer-sponsored insurance, offering affordable, flexible plan options and value-added benefits like telehealth and rewards for healthy living. Serving more than 5.5 million members* in the individual market, Ambetter Health focuses on delivering reliable, high-quality healthcare benefits that adapt to the changing needs of its members and the market, including rising costs, coverage gaps, and consumer demand for flexibility and choice.
In addition to on-exchange marketplace plans, Ambetter Health offers off-exchange individual health insurance plans that are compatible with Individual Coverage Health Reimbursement Arrangements (ICHRA).
*As of 12/31/2025
About Centene
Centene Corporation is the nation’s largest Medicaid managed care company focused on underserved populations. The company offers affordable, quality-focused products to more than 1 in 15 individuals across the nation, including Medicaid and Medicare members (including Medicare Prescription Drug Plans) as well as individuals and families served by the Health Insurance Marketplace. By working hand-in-hand with providers, policymakers, and communities, Centene connects people to what matters most – not just healthcare, but essentials like food, housing, utilities, and transportation – to drive meaningful health outcomes.
Sarah M. London, CEO
Sarah London has spent her career at the intersection of data, technology, and healthcare transformation, bringing her expertise to a range of organizations from start-ups to Fortune 500 companies. Before joining Centene in 2020 and becoming the youngest female CEO of a Fortune 500 company in 2022, she held roles at Optum (a division of UnitedHealth Group); Humedica; Accretive Health (now R1 RCM); and Health Leads, where she first developed her passion for using data to improve health outcomes for underserved communities. Sarah graduated magna cum laude from Harvard College and holds a Master of Business Administration with High Honors from the University of Chicago Booth School of Business.
Frequently Asked Questions
Centene Corporation is a leader in government-sponsored healthcare with extensive expertise in lower-income and medically complex populations, providing care to more than 1 in 15 Americans with a uniquely local approach. Our employees live in the communities we serve and often have personal experiences that reflect those of our members, which drives our ability to provide local, personalized care backed by the scale of Centene’s enterprise, data, and resources.
Centene Corporation provides affordable, quality-focused products to more than 1 in 15 individuals across all 50 states. Our offerings include Medicaid and Medicare, including Medicare Prescription Drug Plans. We offer Ambetter Health insurance in 29 states on the Health Insurance Marketplace.
On March 22, 2022, Centene Corporation appointed Sarah London to the position of chief executive officer (CEO). Prior to her appointment as CEO, London served as vice chairman of the Centene Board of Directors.
Centene’s Board of Directors represents a range of experiences in areas that are relevant to the company’s business activities. We believe our directors should understand the wide range of populations we serve and possess the highest personal and professional ethics, integrity, and values, and be committed to representing the interests of our stakeholders. Read more about Centene’s Board of Directors at centene.com.