Ascension Sells Its Stake in an Arizona Medicaid Plan to Aetna
Ascension has agreed to sell its stake in Mercy Care, the Arizona Medicaid managed care plan it has co-owned with CommonSpirit’s Dignity Health since 1985, to Aetna. The deal is subject to regulatory approval and is expected to close in fiscal year 2027.
Mercy Care covers about 404,000 members across Arizona’s Medicaid program and dual-eligible special needs plans. Aetna has run Mercy Care’s day-to-day operations since 2002, and CommonSpirit called the ownership change “a natural evolution” of that partnership.
Mercy Care is profitable, but only barely. Its reported $34 million surplus last year was about 0.7% of roughly $5 billion in revenue, a margin that could be quickly erased by small swings in medical costs or reimbursement.
The sale fits Ascension’s broader pivot toward outpatient care.
Ascension sold its 50% stake in Wisconsin insurer Network Health to Froedtert Health in 2023 and exited the Texas ACA marketplace in 2024. Ascension also reduced its hospital portfolio from 139 hospitals in 2022 to about 90. In June, it completed its roughly $3.9 billion acquisition of ambulatory surgery operator AmSurg, bringing Ascension’s network to more than 300 ambulatory surgery centers (ASCs).
Taken together, these moves show a system stepping back from insurance and hospital ownership while expanding outpatient care.
Ascension isn’t alone in rethinking health plan ownership.
Provider-sponsored health plans (PSHPs) face a difficult market: rising medical and pharmacy costs, growing regulatory demands, and competition from national insurers have made it increasingly hard for regional, system-owned plans to stay profitable.
Carle Health shut down its insurance businesses at the end of 2025, and Michigan Medicine discontinued its health plan the same year.Providence is also shutting down its health plan after a deal to transfer its Medicare Advantage business fell through.
Health system finance leaders’ expectations reflect the same pressures. In THMA’s 2026 Finance and Budgeting Survey of 32 health system CFOs and VPFs, fielded in July 2026, only 23% expect their PSHPs to exceed revenue growth expectations over the next 12 months, placing PSHPs’ revenue expectations 10th among 12 business units.
The PSHP market is splitting.
Craig Savage, a managing director at Alvarez & Marsal, describes the PSHP market as “bifurcating.” Their December 2025 report found that only a few systems have made their plans strategic assets.
Indeed, while some systems exit, others are doubling down on scale. Corewell Health’s Priority Health has grown through acquisitions, and Fallon Health plans to join Mass General Brigham Health Plan.
So What?
Ascension is narrowing its focus to care delivery, with outpatient care at the center. The Mercy Care sale is its third insurance exit since 2023, alongside hospital divestitures and the AmSurg acquisition.
National payers are absorbing the business systems let go. Aetna, which has prioritized dual-eligible members, gains full ownership of a plan it already knows well.
The bar is rising for health systems to keep a health plan. Regional plans struggle to match national insurers on scale, and finance leaders rank PSHPs near the bottom of growth expectations. Even a profitable plan can go if it doesn’t fit the system’s core strategy.
What Industry Partners Should Do Now:
Don’t assume a provider-sponsored plan is a long-term buyer. Watch its performance. Thin or shrinking margins, falling star ratings, membership losses, or how health systems describe the plan in financial filings can all point to strategic fit and long-term ownership plans. A sale can move the buying decision to a national insurer with its own processes and partners.
Follow the capital. When a system exits a business, ask where the money is going. Ascension’s shift signals where budgets and leadership attention are moving: outpatient operations and ASC performance.
Expect payer relationships may shift as plans change hands. A system exiting its plan loses an in-house payer and may renegotiate network contracts, so ask partners how that’s reshaping their payer strategy.
The Bottom Line:
Ascension’s sale of a profitable but thin-margin Medicaid plan shows some large systems are choosing focus over diversification stepping back from insurance risk. With many finance leaders tempering their expectations for health plans, partners should understand which businesses their accounts see as core before predicting future spending.