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Advisory committee weighs state market‑oversight and transaction‑review options to curb consolidation’s cost impact
Summary
Data Issues Advisory Committee members and panelists told the Health Care Cost Transparency Board that Washington should consider a narrowly targeted transaction‑review program, a provider/ownership registry and improved price/quality transparency to detect consolidation risks and protect access, especially in rural areas.
The Data Issues Advisory Committee on June 23 discussed whether Washington should create a formal market‑oversight or transaction‑review program to monitor health‑care consolidations and ownership changes.
Chair Ross framed the choice as one of “early warning, transparency, [and] strategic intervention” rather than price setting or replacing antitrust enforcement. Speakers repeatedly stressed the need to narrow the scope and set thresholds to avoid overwhelming staff resources.
Panelist Hunter Plumer, a market analyst with Health Trends Consulting, recommended combining ownership‑concentration metrics with outcome analysis: “So 2 different measurements going on… one is measuring the consolidation, and the other is measuring the impact of said consolidation,” he said, advocating for concentration measures (HHI and market‑share cutoffs) paired with difference‑in‑differences analyses on claims data.
Margaret Dennis, analytics leader at the Washington Health Benefit Exchange, urged practical transparency and a registry to help the exchange and purchasers understand who owns what: “We are interested in provider consolidation because carriers tell us that… the reason for cost increases is healthcare provider pricing,” she said, and cited a concrete local effect — San Juan County moved from three carriers to one for 2026, with a 25% local enrollment loss.
Committee members discussed tradeoffs. Several warned that an initial review threshold set too low can flood an agency with modest transactions; Oregon’s experience was cited as an example. Members also emphasized differentiating urban and rural markets and excluding specialty or statutorily distinct providers where appropriate.
The committee signaled support for a layered approach: (1) build a provider/ownership registry to create a “source of truth,” (2) prioritize targeted transaction review with clear thresholds and filing fees to cover staff costs, and (3) invest in public and purchaser‑facing price/quality outputs from all‑payer claims data. Next steps include written feedback to the cost board and continued study at the board’s July meeting.
