Molina Healthcare vs. Centene: Medicaid Managed Care Comparison

Medicaid managed care is a system where states contract with private insurance companies to administer Medicaid benefits on their behalf. Molina Healthcare and Centene (which operates Medicaid plans under various names including WellCare, Ambetter, and Health Net) are the two largest Medicaid managed care organizations (MCOs) in the country by enrollment. Together they cover tens of millions of low-income Americans.

Understanding how these two organizations compare on quality, complaint rates, and denial patterns helps Medicaid members and their advocates fight for appropriate coverage.

Medicaid Managed Care: The Basic Structure

When a state contracts with an MCO like Molina or Centene, the MCO receives a fixed per-member-per-month capitation payment from the state in exchange for administering the state's Medicaid benefit package. The MCO profits by keeping costs below the capitation rate.

This creates a fundamental tension: every service the MCO denies increases its profit margin. State contracts include quality standards, grievance requirements, and reporting obligations intended to prevent inappropriate denials — but enforcement varies significantly.

Centene Corporation

Centene is the largest Medicaid managed care organization in the United States by revenue, operating in over 30 states. Its subsidiaries include:

• WellCare (Medicaid and Medicare in many states)
• Ambetter (ACA marketplace plans)
• Health Net (California Medicaid/Medi-Cal and commercial)
• Peach State Health Management (Georgia)
• Sunflower Health Plan (Kansas)
• Various state-specific plans

Centene's growth has been driven largely by state Medicaid contract wins and acquisitions. Its scale creates both operational efficiency and accountability challenges.

Centene's regulatory record: Centene has faced significant legal and regulatory challenges:

• In 2022, Centene reached a $1.25 billion settlement with multiple states over pharmacy benefit manager (PBM) practices, including allegations of overcharging Medicaid programs.
• Centene has faced state audits and regulatory actions in multiple states for inadequate provider networks, timely access violations, and claims processing errors.

Molina Healthcare

Molina Healthcare focuses almost exclusively on government-funded programs — Medicaid, Medicare, and the ACA marketplace — and covers approximately 5 million members across over 20 states.

Molina is generally considered more focused in its operations than Centene, concentrating on a narrower set of states and programs rather than pursuing the same breadth of acquisitions.

Molina's regulatory record: Molina has also faced state actions:

• Molina has received corrective action plans from state Medicaid agencies in several states for issues including Prior Authorization Denied: How to Appeal" class="auto-link">prior authorization delays and timely claim processing.
• Molina has faced member complaints related to access to specialists and behavioral health services.

Denial Patterns in Medicaid Managed Care

Both Molina and Centene plan subsidiaries have faced documented issues with:

Prior Authorization Delays and Denials

Medicaid managed care plans are required under federal Medicaid law to have PA processes that do not create barriers to medically necessary care. Both organizations have received state and federal scrutiny for:

• Denying behavioral health and substance use disorder services.
• Applying step therapy protocols to medications covered without restriction under fee-for-service Medicaid.
• Delaying PA decisions beyond state-mandated timelines.

Network Adequacy

Medicaid MCOs must maintain provider networks sufficient to provide timely access to all covered services. Both Centene and Molina plans have been cited in multiple states for network adequacy failures — particularly for specialist access, dental care, and behavioral health providers.

If you cannot get timely care within the MCO network, you may have the right to request out-of-network coverage at in-network rates.

Medicaid Member Rights in Managed Care

Medicaid members have specific rights that many do not know about:

1. The right to a Notice of Action: When the MCO denies, reduces, or terminates a service, it must send a written notice with specific reasons.
2. The right to a State Fair Hearing: Beyond the MCO's internal grievance process, Medicaid members can request a hearing before the state Medicaid agency — independent of the MCO.
3. Continuation of benefits: In many states, if you appeal a reduction or termination of an ongoing service before the effective date, the MCO must continue providing the service during the appeal.
4. Ombudsman assistance: Most states have Medicaid managed care ombudsman programs to help members navigate grievances.

Comparing Quality Data

NCQA rates Medicaid managed care plans through its HEDIS quality measures. Both Molina and Centene subsidiaries have plans that span a wide range of NCQA performance — state and plan-specific data is publicly available on the NCQA Health Plan Ratings website.

States also publish MCO quality report cards annually, which are often the most relevant sources of comparative data for local Medicaid members.

Fight Back With ClaimBack

Medicaid managed care members have robust appeal rights — including state fair hearings independent of the MCO. ClaimBack helps you understand those rights and build an effective case.

Start your appeal at ClaimBack

Related Reading

• How to Write an Insurance Appeal Letter
• What Is Medical Necessity?
• Internal vs. External Insurance Appeals