Oregon regulators now have the power to dig into, and in some cases stop, big health care deals that could drive up prices or thin out services in local communities. That new muscle is getting a high-profile workout with a proposed affiliation between Corvallis-based Samaritan Health Services and Tacoma-based MultiCare Health System, a deal local officials, nurses and state watchdogs say could reshape access and costs across parts of the mid‑Willamette Valley.
According to OPB, Oregon’s Health Care Market Oversight program can take what starts as a basic notice of a “material transaction” and escalate it into a full-scale review that looks at access, equity, quality and cost. That deeper review can end with state-imposed conditions, extended monitoring after the deal closes, or even referrals to other agencies if regulators see risks to patients or to affordability.
The Samaritan-MultiCare plan would make MultiCare Samaritan’s sole corporate member and includes a 10‑year, $700 million capital commitment, according to a transaction summary from the Oregon Health Authority. OHA’s transaction page shows the agency accepted Samaritan’s notice on Dec. 26, 2025, then paused its review clock at several points while it asked for more documentation. The agency is taking public comment on the filing through its docket. Samaritan and MultiCare say the affiliation will steady existing services and help expand specialty and behavioral health care across the region.
How Oregon’s Review Can Shape A Deal
Oregon’s transaction rules require extensive filings and give regulators a toolkit that ranges from demanding diligence reports to attaching long-term conditions to any approval, as outlined by Holland & Knight. Legal analysts note that these powers were effectively reinforced after courts largely rejected a challenge brought by the hospital trade group, leaving OHA free to keep reviewing, conditioning and tracking major health care deals.
Community And Union Pushback
Frontline staff have become some of the most vocal participants in the review. The Oregon Nurses Association submitted a letter urging regulators to conduct a comprehensive review and arguing that Samaritan’s short-term promise to “continue existing services” does not come with strong, enforceable protections, according to the union’s statement. The Oregon Nurses Association filing is part of a growing stack of public comments and local reporting that show organized labor and community leaders trying to shape OHA’s scrutiny of the deal.
Legal Stakes For The Deal
Policy researchers point out that if OHA concludes a transaction would undermine access or affordability, the agency can respond with conditions, mandated remedies or a referral to the attorney general, steps that can trigger litigation or send parties back to the negotiating table. That framework, described by the Milbank Memorial Fund, has mostly been upheld by the courts, which means health systems will likely need to show clear, concrete benefits for underserved communities if they want their deals to clear the state’s review.
The Samaritan-MultiCare review is still underway, and a final decision could be months away. While OHA gathers documents and public input, Samaritan and MultiCare are preparing their next round of submissions. Whatever the outcome, the decision is expected to draw close attention from other states that are considering tougher rules on health care consolidation.
