Who can inject
MD, DO only; RN/NP/PA may not inject neurotoxins/fillers
Registered nurses (RNs)
No; RNs cannot inject neurotoxins or fillers in Massachusetts
Nurse practitioners & physician assistants
NP/PA cannot inject neurotoxins/fillers; limited to supportive roles
The exam that makes it legal
Required; in-person exam 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; physician judgment controls.
What to verify in Massachusetts
Ensure a licensed MD or DO is the owner or has controlling interest, and verify on-site physician availability for all injection services.
Primary source: Massachusetts Medical Board
General business information for Massachusetts medical-spa owners, current as of 2026 — not legal advice. State boards update rules often; confirm specifics with the Massachusetts board (and your own counsel) before you act.