The short version. Oregon SB 951 bars dual roles between the professional entity and its management company, and bars MSO control over clinical and defined business decisions. Two different dates apply, and which one you get depends on when your entity was formed — not on when you started operating in Oregon.
What this is. A read of what a named statutory change actually requires, and by when. It is not a client engagement. Dates and section numbers come from the enacted text, cited at the foot of the page.
What the statute does
SB 951 is the most restrictive management-services statute in the United States. It does two things that most MSO agreements were not written for:
- It bars dual roles between the professional entity and the management company — the same person cannot sit on both sides.
- It bars MSO control over clinical decisions and over a defined set of business decisions.
The two dates, and why the second one lulls people
| Your entity | Ownership and control rules bite |
|---|---|
| Formed on or after 9 June 2025 | 1 January 2026 |
| Formed before that | 1 January 2029 |
The 2029 date is the trap. It reads like breathing room, and operators file it and move on. But a group that forms any new Oregon entity after 9 June 2025 — a second location, a restructure, a joint venture — has bought itself the 2026 date for that entity while still believing it is on the 2029 clock.
Separately, the restrictive-covenant provisions applied immediately. If your physician agreements contain non-competes drafted for a different state, that part is not waiting for anybody.
What actually has to be rewritten
- Any officer, director or shareholder who sits on both the professional entity and the MSO.
- Any clause giving the MSO approval rights over clinical protocols, staffing levels, or which patients are accepted.
- Any clause letting the MSO set prices for a provider’s services, or make coding and billing decisions.
- Non-competes and other restrictive covenants in provider agreements.
- A management fee that moves with clinical profit.
The wider pattern
Oregon is not an outlier any more, it is the leading edge. Vermont’s H.583 arrived in 2026 with a control list and a filing deadline. California’s SB 351 took effect 1 January 2026 with Attorney General enforcement. Indiana requires registration by 1 January 2027.
If you run a multi-state MSO, the practical consequence is that a single national management agreement is now a liability. The terms that are ordinary in one state are prohibited in another, and the dates do not line up.
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Frequently asked questions
What does Oregon SB 951 prohibit?
Dual roles between the professional entity and its management company, and MSO control over clinical decisions and a defined set of business decisions.
When do the rules apply to us?
1 January 2026 for entities formed on or after 9 June 2025; 1 January 2029 for entities formed before that.
Is anything already in force?
Yes. The restrictive-covenant provisions applied immediately.
Does forming a new entity change our date?
A newly formed entity falls on the earlier clock. Forming after 9 June 2025 does not inherit the 2029 date.
Sources. Oregon SB 951 (2025); ORS ch. 677; Oregon Medical Board guidance.
General information, not legal advice. This page analyses a public record or a published statute and describes no client of MDside. Confirm your own position with healthcare counsel licensed where you operate.