> ## Documentation Index
> Fetch the complete documentation index at: https://mso.getlemma.com/llms.txt
> Use this file to discover all available pages before exploring further.
# Oregon — CPOM & MSO reference
> Corporate practice of medicine status, professional entity forms, fee-splitting, noncompete law, and MSO-specific requirements in Oregon.
Oregon is a **strict** corporate practice of medicine state: lay ownership and control of medical practice is prohibited, enforcement is active, and the MSO-PC structure requires careful drafting to hold up.
**High-activity state.** Oregon sees substantial MSO-PC activity, which means both more precedent to work from and more scrutiny. Budget for state-specific counsel rather than adapting a template from elsewhere.
**Checked August 2026.** Oregon's rules come from some combination of statute, licensing board regulation, attorney general opinions, and case law, and they change — check the [legislation tracker](/reference/legal/cpom-legislation-tracker) for pending changes.
## 1. CPOM status — medicine
**Tier:** Strict — the strictest MSO statute in the country
Doctrine now substantially governed by **S.B. 951 and H.B. 3410 (2025)**, amending ORS 58.375 and 58.376 and adding **ORS 676.555**.
## 2. Other professions
The medical answer does **not** determine the answer for other professions. Each has its own doctrine, board, and statute.
| Profession | Where to check |
| ----------------------------------- | ---------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **Dentistry** | The state dental board and the dental practice act. Dentistry is frequently regulated more explicitly than medicine, and several states impose DSO registration. |
| **Optometry** | The optometry board. Retail-optical carve-outs are common and narrow. |
| **Physical therapy / chiropractic** | The respective boards. POPTS restrictions may apply. |
| **Veterinary** | The veterinary board. CPVM exists in some states and not others, on a different map from medicine. |
| **Behavioral health** | Multiple boards, one per license type. Whether one entity may employ several license types is the key question. |
See [Multi-specialty considerations](/concepts/entities/multi-specialty-considerations).
## 3. Professional entity forms
**Permitted forms:** PC / professional medical entity
**Ownership:** **Physician majority required. MSO or MSO-agent majority ownership or control is barred.** Overlapping ownership by shareholders of professional medical entities is restricted.
Also confirm before filing:
* **Naming rules**, designator requirements, and whether the name is constrained to licensed owners' surnames
* **Board pre-approval**, whether a licensing board certificate is required *before* the secretary of state will file
* **Officer and director licensure**: several states restrict these roles to licensees, not just shareholders, which forecloses MSO executives serving on the PC's board
See [PC vs PLLC vs PA](/concepts/entities/pc-vs-pllc-vs-pa) and [Form a professional corporation](/guides/formation/form-a-pc).
## 4. Fee-splitting and percentage management fees
**Fee-splitting:** Permitted, but read alongside the control prohibitions
The practical question for your MSA is whether a **percentage-of-collections** management fee is viable. Flat and cost-plus structures carry materially lower fee-splitting exposure everywhere. See [Fee-splitting rules](/concepts/model/fee-splitting) and [Set the management fee](/guides/agreements/set-the-management-fee).
## 5. Physician noncompetes
**S.B. 951 voids most physician noncompetes**
Noncompete law moved substantially in 2025–2026. The FTC's Non-Compete Rule was vacated, the FTC dropped its appeals in September 2025, and the rule was removed from 16 C.F.R. pt. 910 effective February 12, 2026, leaving regulation primarily to the states, several of which have since restricted or voided physician noncompetes. **Verify current law in this state before including one.** See the [legislation tracker](/reference/legal/cpom-legislation-tracker).
## 6. MSO-specific laws and registration
**S.B. 951 is the most restrictive MSO law in the US.** It reaches MSO control over **scheduling, clinician compensation, coding, billing, and payer contract terms**, and **restricts share-transfer arrangements**. Carve-outs include **dental, physical therapy/occupational therapy, veterinary, and certain behavioral health**.
## 7. Transaction review and notice
Check whether Oregon requires notice or approval for healthcare transactions, and whether MSO or private-equity ownership must be disclosed. A growing set of states added these regimes in 2025–2026 — see the [legislation tracker](/reference/legal/cpom-legislation-tracker) for the current list.
## 8. Practical structuring notes
**The compliance deadlines are the thing to internalize: January 1, 2026 for arrangements formed on or after June 9, 2025, and January 1, 2029 for pre-existing arrangements.** That second date is a restructuring project, not a document review — and it will involve share transfers, MSA renegotiation, and payer notification. Note also that the **share-transfer restriction is the provision that most directly attacks the standard friendly-PC toolkit**.
### The standing checklist for any state
* [ ] Confirmed the permitted entity form **for your profession**
* [ ] Confirmed whether board pre-approval is required before filing
* [ ] Confirmed whether officers and directors must be licensees
* [ ] Confirmed the fee structure is lawful here
* [ ] Clinical carve-out drafted against **this state's** current statutory language
* [ ] Transfer restriction agreement checked against current state law
* [ ] Noncompete provisions checked against current state law
* [ ] MSO foreign-qualified before it has employees here
* [ ] Any MSO registration or transaction notice obligation identified
## 9. Sources and where to verify
| What | Where |
| --------------------------------------- | ---------------------------------------------------------------------------------------- |
| Professional entity statute | Oregon code — professional corporation / professional LLC provisions |
| Medical practice act and board rules | The Oregon medical board |
| Dental, optometry, PT, veterinary rules | The respective Oregon boards |
| Attorney general opinions | The Oregon Attorney General |
| Entity formation and good standing | The Oregon Secretary of State |
| Pending legislation | The Oregon legislature's bill tracker |
| Unclaimed property | The Oregon unclaimed property administrator, via [unclaimed.org](https://unclaimed.org/) |
For the cases and statutes referenced above, see [CPOM case law](/reference/legal/cpom-case-law). For enacted and pending legislation across all states, see the [CPOM & MSO legislation tracker](/reference/legal/cpom-legislation-tracker).
## Related topics
- [The corporate practice of medicine doctrine](/concepts/model/cpom.md)
- [Fee-splitting rules, explained](/concepts/model/fee-splitting.md)
- [Who can own a professional entity](/concepts/entities/who-can-own-what.md)
- [Form a professional corporation](/guides/formation/form-a-pc.md)
- [Draft the management services agreement (MSA)](/guides/agreements/draft-a-management-services-agreement.md)
- [Run a CPOM self-audit](/guides/compliance/run-a-cpom-self-audit.md)
- [CPOM case law](/reference/legal/cpom-case-law.md)
- [CPOM & MSO legislation tracker](/reference/legal/cpom-legislation-tracker.md)
- [MSA clause anatomy](/reference/legal/msa-clause-anatomy.md)