Hospital consolidation is picking up steam, and the most notable deals moving through the pipeline are not incremental bolt-ons. They are multibillion-dollar combinations spanning states, reshuffling metro markets and pulling once-independent flagships under national and super-regional banners.
Some are cross-country tie-ups that stitch together systems on opposite ends of the map. Others are metro joint ventures that rewrite the competitive landscape in a single city overnight. All of them will change how executives think about scale, capital access and the balance of power between providers and payers in the markets they touch.
Here are nine health system deals reshaping the hospital landscape:
Editor’s note: This is not an exhaustive list.
1. Sutter Health and Allina Health: A $26 billion, 3-state combination
Sacramento, Calif.-based Sutter Health plans to acquire Minneapolis-based Allina Health, creating a nonprofit that would span California, Minnesota and Wisconsin. The combined organization would carry roughly $26 billion in revenue, 39 hospitals, more than 400 care sites and 88,000 employees.
The deal is expected to close by the end of 2026, pending regulatory approval, and would immediately rank among the largest nonprofit systems in the country. It is also unusual in its geographic sprawl. California and Minnesota do not share a border, a payer contract or a workforce market, and integration decisions on shared services, IT and clinical standardization will be scrutinized across the industry.
2. Northwell Health and Nuvance: A $23 billion, 28-hospital Northeast powerhouse
New Hyde Park, N.Y.-based Northwell Health and Danbury, Conn.-based Nuvance Health closed their merger in May 2025, creating a 28-hospital system with more than 1,050 ambulatory sites, 104,000 employees and annual revenue of about $25 billion.
The tie-up extends Northwell’s footprint deep into the Hudson Valley and western Connecticut, folding in seven Nuvance hospitals. For commercial payers negotiating in downstate New York and the Connecticut suburbs, the combined system now sits across the table with materially more leverage than either operator had alone.
3. Atrium Health and WakeMed: Advocate’s big North Carolina play
Charlotte, N.C.-based Atrium Health, part of Advocate Health, and Raleigh, N.C.-based WakeMed Health & Hospitals plan to combine into a single system. The proposed transaction would bring WakeMed — one of the last major independents in the Research Triangle — under the Advocate umbrella.
The deal is subject to regulatory review expected to run several months. If cleared, it would give the third-largest nonprofit system in the country a dominant position in two of North Carolina’s most important care markets and further compress an already concentrated field of competitors.
4. AdventHealth and Intermountain: 8 Denver-area hospitals under one JV
Altamonte Springs, Fla.-based AdventHealth, a 57-hospital system, and Salt Lake City-based Intermountain, a 34-hospital system, are pursuing a joint venture that would combine eight hospitals, dozens of physician practices and a network of emergency and urgent care centers across the greater Denver area.
AdventHealth would lead daily operations. The transaction is expected to close in early 2027, pending a definitive agreement and regulatory approvals. The structure borrows from the playbook Detroit-based Henry Ford Health and St. Louis-based Ascension used in southeastern Michigan and applies it to one of the fastest-growing metros in the country, effectively creating a new anchor competitor in Denver.
5. Prisma Health and Erlanger Health: A $2 billion push into East Tennessee
Greenville, S.C.-based Prisma Health, a 20-hospital system, plans to acquire Chattanooga, Tenn.-based Erlanger Health, a seven-hospital system. The proposal includes $2 billion in capital investments to expand access and accelerate growth across Chattanooga.
Prisma would establish its East Tennessee regional headquarters in Chattanooga, with Erlanger President and CEO Jim Coleman leading the region. It is Prisma’s most significant out-of-state move to date and marks the arrival of a large cross-border operator in a market long served primarily by local incumbents.
6. Sanford Health, Marshfield Clinic and now North Memorial: A rural care powerhouse takes shape
Sioux Falls, S.D.-based Sanford Health and Marshfield (Wis.) Clinic Health System closed their merger Jan. 1, 2025, forming a 56-hospital system with about 56,000 employees and two health plans. Sanford has since added Watertown, S.D.-based Prairie Lakes Healthcare System and signed a definitive agreement to combine with Robbinsdale, Minn.-based North Memorial Health, a two-hospital system with more than 22 clinics across the Twin Cities.
Stacked together, the moves make Sanford one of the dominant providers across the upper Midwest and one of the few very large systems built explicitly around rural and small-metro care delivery. That is a model competitors and policymakers will be watching closely as rural hospital financial stress deepens.
7. MultiCare and Samaritan: An 18-hospital Pacific Northwest system
Tacoma, Wash.-based MultiCare Health System plans to merge with Corvallis, Ore.-based Samaritan Health Services, creating an 18-hospital system with more than 33,000 employees.
The transaction, expected to close in mid-2026, would bring Samaritan under the MultiCare umbrella and extend MultiCare’s reach deeper into Oregon. For MultiCare, the deal adds scale across the Pacific Northwest while giving Samaritan the backing of a larger regional system at a time when independent providers are increasingly seeking partners with greater capital, technology and operational resources.
8. NYC Health + Hospitals and Maimonides: A $2.2 billion Brooklyn play
NYC Health + Hospitals, New York City’s public health system, plans to acquire Brooklyn, N.Y.-based Maimonides Health. Under the proposed deal, Maimonides would receive up to $2.2 billion over five years through a state grant announced in October.
If completed, the transaction would make NYC Health + Hospitals a 14-hospital system and mark a rare expansion of a public health system through the direct acquisition of a large private nonprofit. It would also extend the city’s direct operational reach into one of Brooklyn’s largest safety-net providers at a moment when independent nonprofits in high-cost markets are increasingly looking for financial partners.
9. Prime Healthcare: Building a 55-hospital national footprint
Ontario, Calif.-based Prime Healthcare acquired Franciscan Health Olympia Fields (Ill.) in May, making it the system’s ninth hospital in Illinois. In February, Prime acquired Lewiston-based Central Maine Healthcare, a three-hospital system.
The deals extend Prime’s footprint in both the Midwest and Northeast and bring the system to 55 hospitals across 15 states. Taken together, the acquisitions reinforce Prime’s strategy of building scale through targeted hospital purchases in markets where it can expand regional density while continuing to grow nationally.
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