Aetna Has Agreed to Acquire Arizona’s Mercy Care

The health plan operator will transfer its ownership stakes to the CVS Health subsidiary to scale operations.

Updated on Oct. 2, 2026 in Healthcare

Isometric editorial illustration showing two interlocking steel frames, symbolizing the acquisition and integration of a healthcare company. — Aetna has agreed to acquire Mercy Care from Dignity Health and Ascension, integrating the Arizona-based health plan into its national operations. AI Illustration. Upload story photo >

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Aetna has reached a definitive agreement to acquire Mercy Care, an Arizona-based managed care health plan. The deal shifts ownership away from Dignity Health and Ascension to the CVS Health subsidiary.

Why it matters

The transition aligns Mercy Care with the broader technology infrastructure and capital resources of Aetna. This move aims to integrate the plan more fully into the parent company's national scale after decades of partnership.

Aetna has managed daily operations and administrative services for Mercy Care for more than 20 years. CommonSpirit held a 49.75% ownership interest in the health plan as of June 30, 2026.

The players

Aetna

This health insurance company is a major subsidiary of CVS Health.

Mercy Care

This organization operates as a managed care health plan serving populations across Arizona.

Dignity Health

This healthcare provider is a member of the CommonSpirit Health system headquartered in San Francisco.

Ascension

This is a major Catholic health system that provides medical services across the United States.

CommonSpirit Health

This large nonprofit health system is based in Chicago and operates numerous hospitals and care centers.

The details

Mercy Care currently serves beneficiaries through the Arizona Health Care Cost Containment System, Medicaid, and Medicare Duals Special Needs Plans. Dignity Health and Ascension agreed to transfer their shares as the company moves under the CVS Health umbrella.

June 30, 2026, was the date CommonSpirit reported its ownership interest.
Oct. 1, 2026, was the date of a statement from a CommonSpirit spokesperson.
Oct. 2, 2026, was the date of a statement from an Aetna spokesperson.
Fiscal year 2027 is the projected timeframe for the transaction to close.

Market Landscape

This move reflects the ongoing trend of vertical integration within the healthcare sector as insurers absorb regional managed care providers. It follows the pattern of the 2018 CVS Health acquisition of Aetna by consolidating administrative control and ownership under a single national entity.

Members of Mercy Care should not see immediate changes to their daily health plan services due to the long-standing 20-year management history with Aetna. The acquisition is designed to stabilize administrative operations through the resources of the parent company.

The takeaway

The acquisition cements Aetna's long-term administrative control over a key Arizona healthcare provider. Readers should monitor future updates regarding potential changes to provider networks or plan benefits as the transition proceeds through fiscal year 2027.