Can a nurse practitioner treat without a supervising physician in Washington?
Who treats · part of The Practice Perimeter
Short answer
The cited rules do not settle this — the ARNP statute names no supervising physician and allows prescribing on board approval, but it hands the expanded scope to nursing board rules not cited here, so whether a cosmetic treatment falls in it is unanswered.
Advanced registered nursing practice means the acts of a registered nurse plus an expanded role “the scope of which is defined by rule by the board”, and on board approval an ARNP may prescribe legend drugs and controlled substances in Schedule V, and Schedules II through IV subject to statutory conditions. The statute grants the authority and hands the scope to the nursing board.
Wash. Rev. Code 18.79.050 · verified Sep 2, 2026 · regulatory monitoring, not legal advice
Related Washington rules
Registered nursing practice expressly includes the executing of a medical regimen as prescribed by a licensed physician and surgeon, osteopathic physician, podiatric physician, dentist, physician assistant or advanced registered nurse practitioner. The order may come from any of those; the nurse carrying it out is acting on it.
Wash. Rev. Code 18.79.040(1)(e) · verified Sep 2, 2026
A physician assistant may use an LLRP device on skin with the consent of a participating physician and in accordance with standard medical practice, provided they are appropriately trained in the physics, safety and techniques of the device beforehand and remain competent for as long as it is used. Washington gives physician assistants their own rule rather than treating them as a delegate under the physician’s.
Wash. Admin. Code 246-918-125(4) and (5) · verified Sep 2, 2026
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Related Washington questions
- Can a registered nurse inject Botox or filler in Washington?
- Can a physician assistant inject or prescribe in Washington?
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