Who can inject
MD, DO, NP, PA, RN under physician supervision or delegation
Registered nurses (RNs)
Yes, under physician delegation; scope varies by delegation agreement
Nurse practitioners & physician assistants
NP/PA may practice with physician collaboration; independent practice limited
The exam that makes it legal
Required; in-person exam expected 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 clear delegation agreement with a supervising physician and document all protocols before opening.
Primary source: New Hampshire Board of Medicine
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.