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Centene Corporation

Companies/United States  •  Curated by Admin Timeline.sg

Centene Corporation, founded in 1984 as a single clinic, grew into a Fortune 500 managed care company through aggressive acquisitions and expansion into government-sponsored healthcare programs, but faced regulatory challenges and leadership transitions in the 2020s.

Chronological Storyline (40 Milestones)

1984 CE

Foundation as a Single Clinic

Elizabeth 'Betty' Brinn founds a small healthcare clinic in Milwaukee, Wisconsin, which later becomes Centene Corporation. #Centene #Healthcare

1987 CE

Expansion into Managed Care

The clinic expands services to include managed care, laying the groundwork for a health plan organization. #Centene #ManagedCare

1990 CE

Renamed to Centene Corporation

The organization rebrands as Centene Corporation, signaling a shift toward a broader healthcare management focus. #Centene #Corporate

1996 CE

Michael Neidorff Becomes CEO

Michael Neidorff takes over as CEO, initiating a period of aggressive growth and acquisitions that transform Centene into a national managed care giant. #Centene #Leadership

Michael Neidorff Becomes CEO
Michael Neidorff Becomes CEO
By Chairman of the Joint Chiefs of Staff - https://www.flickr.com/photos/thejointstaff/47310224141/, CC BY 2.0, https://commons.wikimedia.org/w/index.php?curid=117065210
1999 CE

Acquisition of Managed Health Services

Centene acquires Managed Health Services, expanding its Medicaid managed care presence in the Midwest. #Centene #Acquisition

Dec 13, 2001 CE

Initial Public Offering (IPO)

Centene goes public on the New York Stock Exchange under ticker CNC, raising capital for further expansion. #Centene #IPO

2002 CE

Acquisition of Coordinated Care Corporation

Centene acquires Coordinated Care Corporation, a managed care plan in Indiana, strengthening its Midwest footprint. #Centene #Acquisition

2004 CE

Expansion into Illinois

Centene enters the Illinois Medicaid market through a new health plan, marking its first major expansion outside Wisconsin. #Centene #Expansion

2005 CE

Acquisition of Sterling Healthcare

Centene acquires Sterling Healthcare, adding a pharmacy benefit management (PBM) capability. #Centene #Acquisition

2006 CE

Launch of Specialty Services Division

Centene launches a specialty services division to manage complex care for chronic conditions, expanding its product portfolio. #Centene #Healthcare

2007 CE

Acquisition of First Health Group Corp

Centene acquires First Health Group Corp., a national dental and vision benefits company, diversifying into ancillary services. #Centene #Acquisition

2009 CE

Acquisition of Celtic Insurance Company

Centene acquires Celtic Insurance Company, a health insurer focused on the individual market, expanding its commercial business. #Centene #Acquisition

2010 CE

Expansion into California

Centene enters the California market through a partnership with a local health plan, gaining access to the nation's largest Medicaid program. #Centene #Expansion

2011 CE

Acquisition of U.S. Health and Life Insurance Company

Centene acquires U.S. Health and Life Insurance Company, adding Medicare and supplemental health products. #Centene #Acquisition

2012 CE

Acquisition of The Health Plan of Texas

Centene acquires The Health Plan of Texas, a Medicaid managed care plan, strengthening its presence in the South. #Centene #Acquisition

2013 CE

Acquisition of Exchange Health Plans

Centene acquires several health plans from Exchange Health Plans, expanding its marketplace offerings under the Affordable Care Act. #Centene #Acquisition #ACA

2014 CE

Entry into Florida Market

Centene launches a health plan in Florida, becoming a major player in the state's Medicaid managed care market. #Centene #Expansion

Aug 17, 2015 CE

Announced Acquisition of Aetna's Medicaid Business

Centene announces it will acquire Aetna's Medicaid managed care business for $1.2 billion, significantly expanding its scale. #Centene #Acquisition

Feb 1, 2016 CE

Completed Acquisition of Aetna's Medicaid Business

Centene completes the acquisition of Aetna's Medicaid business, adding approximately 900,000 members. #Centene #Acquisition

Jul 27, 2016 CE

Acquisition of Health Net

Centene acquires Health Net for $6.8 billion, creating one of the largest Medicaid managed care companies in the U.S. #Centene #Acquisition #HealthNet

2017 CE

Launch of Behavioral Health Services

Centene launches a behavioral health division to integrate mental health services, addressing a growing need. #Centene #BehavioralHealth

Oct 1, 2018 CE

Acquisition of Fidelis Care

Centene acquires Fidelis Care, a New York-based managed care plan, adding 1.7 million members. #Centene #Acquisition

Mar 12, 2019 CE

International Expansion: Acquisition of Ribera Salud

Centene acquires Ribera Salud, a Spanish healthcare provider, marking its first major international expansion. #Centene #International

Oct 14, 2019 CE

Announced Acquisition of WellCare Health Plans

Centene announces it will acquire WellCare Health Plans for $17.3 billion, creating the largest Medicaid managed care company. #Centene #Acquisition #WellCare

Jan 23, 2020 CE

Completed Acquisition of WellCare

Centene completes the acquisition of WellCare Health Plans, adding 4.5 million members and establishing dominance in government-sponsored healthcare. #Centene #Acquisition #WellCare

Jun 15, 2020 CE

Settlement with North Carolina for $215 Million

Centene agrees to pay $215 million to resolve allegations of overcharging North Carolina's Medicaid program. #Centene #Legal

Jul 12, 2021 CE

Settlement with Kentucky for $125 Million

Centene pays $125 million to settle a lawsuit involving its Kentucky Medicaid plan, amid ongoing regulatory scrutiny. #Centene #Legal

Oct 21, 2021 CE

Acquisition of Magellan Health (Announced)

Centene announces it will acquire Magellan Health, a specialty managed care company, for $2.2 billion. #Centene #Acquisition #Magellan

Acquisition of Magellan Health (Announced)
Acquisition of Magellan Health (Announced)
By Magellan Health Services - Magellan Health, Public domain, https://commons.wikimedia.org/w/index.php?curid=61411523
Jan 4, 2022 CE

Acquisition of Magellan Health (Completed)

Centene completes the acquisition of Magellan Health, adding expertise in behavioral health and pharmacy management. #Centene #Acquisition #Magellan

Apr 12, 2022 CE

Death of CEO Michael Neidorff

Longtime CEO Michael Neidorff passes away at age 79, leading to a leadership transition. #Centene #Leadership

May 2, 2022 CE

Sarah London Named New CEO

Sarah London, who had been serving as interim CEO, is appointed permanent CEO, becoming the first woman to lead Centene. #Centene #Leadership

Aug 1, 2022 CE

Divestiture of International Operations

Centene announces the sale of its international businesses, including Ribera Salud, to focus on U.S. core operations. #Centene #Divestiture

Mar 15, 2023 CE

Settlement with Mississippi for $55 Million

Centene agrees to pay $55 million to resolve allegations of overbilling in Mississippi's Medicaid program. #Centene #Legal

May 10, 2023 CE

Revenue Milestone: $144 Billion

Centene reports 2022 revenue of $144 billion, reflecting its growth through acquisitions and organic expansion. #Centene #Financial

Aug 24, 2023 CE

Restructuring and Cost-Cutting Initiative

Centene announces a restructuring plan to reduce costs by $1 billion, including layoffs and operational streamlining. #Centene #Restructuring

Jan 31, 2024 CE

Acquisition of U.S. Medical Management (Announced)

Centene announces acquisition of U.S. Medical Management, a provider of medical management services, to enhance care coordination. #Centene #Acquisition

Apr 15, 2024 CE

Expansion into Medicare Advantage

Centene launches new Medicare Advantage plans in multiple states, aiming to capture a share of the growing senior market. #Centene #Medicare

Nov 5, 2024 CE

Election-Year Regulatory Changes

Proposed changes to Medicaid funding under the new administration create uncertainty for Centene's core business. #Centene #Regulation

Feb 27, 2025 CE

Settlement with South Carolina for $95 Million

Centene pays $95 million to resolve allegations of improper payments in South Carolina's Medicaid program. #Centene #Legal

Jun 1, 2025 CE

CEO Sarah London Steps Down

Sarah London resigns as CEO due to health reasons, succeeded by interim CEO. Centene faces leadership instability. #Centene #Leadership