Editorial Note: This hub is editorially reviewed by a practicing ARDMS-credentialed sonographer as part of AlliedLicenseGuide.com’s allied health licensing database. The author holds active ARDMS credentials and reviews DMS licensing content with direct professional expertise.
Diagnostic Medical Sonographer Licensing Guide
Only 4 States Require an Individual Sonographer License
Diagnostic medical sonography is structured differently than most allied health professions on this site. Rather than each state independently licensing sonographers, only four states — New Hampshire, New Mexico, North Dakota, and Oregon — currently require sonographers to hold an individual state-issued license. In the remaining states, national certification through ARDMS, ARRT, or CCI functions as the practical professional standard, even though no state law requires it. This hub reflects that reality: instead of 50 separate state pages, you’ll find dedicated guides for the four licensure states, plus one comprehensive overview explaining what the no-license reality actually means for the rest of the country.
DMS Licensure At a Glance
| States requiring individual licensure | 4 — New Hampshire, New Mexico, North Dakota, Oregon |
| Credentialing standard everywhere | ARDMS, ARRT, or CCI national certification |
| Interstate compact | None — no DMS-specific compact exists nationally |
| State exam required? | No, in any of the four licensure states — all rely on national certification |
The Four Licensure States
If you’re practicing or planning to practice in one of these four states, you need an individual state license in addition to your national certification. Select your state below for fees, application steps, renewal requirements, and sourced details.
- New Hampshire — Renewal
- New Mexico — Renewal (licenses sonography by specialty — see page for DMS/VS/CS distinction)
- North Dakota — Renewal
- Oregon — Renewal
Practicing Anywhere Else?
If you’re practicing in any state other than the four listed above, you most likely do not need an individual state license — but national certification and employer-level credentialing still apply. The guide below explains what that means in practice, including what travel sonographers need to know before accepting an assignment.
Practical Notes
Editorial note: Sonography licensing is genuinely simpler than professions like physical therapy or respiratory care in terms of state count, but don’t mistake “fewer license requirements” for “fewer things to check.” National certification is non-negotiable almost everywhere in practice, and if you’re a travel sonographer working across state lines, the four licensure states require real lead time — don’t assume your ARDMS, ARRT, or CCI credential alone clears you to start work in New Hampshire, New Mexico, North Dakota, or Oregon.
Disclaimer: This page is provided for general informational purposes only and does not constitute legal advice. Licensing requirements, fees, and procedures are subject to change. Always verify current requirements directly with the relevant state licensing board before accepting employment or a travel assignment.
Change Log:
2026-06-21 — Hub page created following completion of all DMS content (4 licensure states + national overview, 9 posts total). Structured around the 4-licensure-state / national-overview framework rather than a flat A-Z state list, reflecting DMS’s distinct regulatory landscape compared to RT, PT, OT, and RC.