Who can inject
MD, DO, NP, PA, RN under physician supervision
Registered nurses (RNs)
Yes, under physician delegation; scope defined by Board of Nursing
Nurse practitioners & physician assistants
NP/PA may inject under collaborative agreement with physician; independent practice not permitted for injectables
The exam that makes it legal
Required; in-person examination mandatory before treatment 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 New Hampshire
Establish a written collaborative agreement with your medical director and document all delegation protocols before opening.
Primary source: New Hampshire Board of Medicine and Board of Nursing
General business information for New Hampshire medical-spa owners, current as of 2026 — not legal advice. State boards update rules often; confirm specifics with the New Hampshire board (and your own counsel) before you act.