Registered nurses (RNs)
Yes, under physician delegation and supervision; scope defined by Board of Nursing
Nurse practitioners & physician assistants
NP/PA may inject under physician collaboration; independent practice not permitted for injectables
Supervision & the medical director
Required for facilities with RN/LPN injectors; physician oversight mandatory
The exam requirement
Required; in-person or telehealth permitted if physician-patient relationship established
What to verify in Maine
Establish written delegation and supervision agreement with medical director; verify current Maine Board of Nursing scope rules for RN injectors.
Primary source: Maine Medical Board and Board of Nursing
General business information for Maine medical-spa owners, current as of 2026 — not legal advice. State boards update rules often; confirm specifics with the Maine board (and your own counsel) before you act.