Can a physician assistant inject or prescribe in Washington?
Who treats · part of The Practice Perimeter
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 · regulatory monitoring, not legal advice
The rest of what Washington says on this
Every other rule we have verified under rn / np scope for injectables, each linked to its primary source.
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
A physician assistant carries the same pre-treatment duties a physician does — history, appropriate physical examination, diagnosis, recommended treatment, informed consent INCLUDING telling the patient a nonphysician may operate the device, emergency and follow-up instructions, and an appropriate medical record — and may themselves delegate an LLRP procedure onward to a properly trained licensed professional whose own scope allows it, so long as it involves no surgery and the device is not used on the globe of the eye.
Wash. Admin. Code 246-918-125(6) and (7) · verified Sep 2, 2026
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
It also includes the administration, supervision, DELEGATION and evaluation of nursing practice, and the observation, assessment, diagnosis, care and health teaching of individuals — acts requiring substantial specialized knowledge, judgment and skill. Delegation downward is part of the registered nurse’s own scope, not something borrowed from the physician.
Wash. Rev. Code 18.79.040(1)(a) and (c) · verified Sep 2, 2026
How other states answer this
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Related Washington questions
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- Can a nurse practitioner treat without a supervising physician in Washington?
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← All Washington rules and changes · MedSpaRadar is regulatory monitoring and reference, not legal, medical, or compliance advice. Verify against the linked primary source and consult qualified counsel before acting — rules change and turn on your specific facts. Legislative data via LegiScan (CC BY 4.0).