Who can inject
MD, DO, NP, PA, RN under physician supervision
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
The exam that makes it legal
Required; in-person or telehealth permitted if physician-patient relationship established A valid order or good-faith exam by an authorized provider is what makes an injection lawful — not simply who holds the syringe.
Training expected
No state-mandated injector training beyond licensure.
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.