Who can inject
MD/DO only; NP/PA/RN may not inject neurotoxins or fillers
Registered nurses (RNs)
No; RNs cannot inject neurotoxins or fillers in Massachusetts
Nurse practitioners & physician assistants
Limited; NP/PA cannot independently inject; physician collaboration required for any delegated procedures
The exam that makes it legal
Required; in-person exam mandatory before any 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 Massachusetts
Ensure a licensed Massachusetts physician owns or has controlling interest in the practice; do not attempt to operate under a non-physician MSO structure.
Primary source: Massachusetts Board of Registration in Medicine; Board of Registration in Nursing
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.