Do Sonographers Need a State License? What the Map Actually Looks Like

This question confuses a lot of people, because “license” and “certification” get used like they mean the same thing. They don’t. Here’s the difference, which four states actually license sonographers, and what’s expected of you in the other forty-six.

License vs. certification — the distinction that matters

A state license is permission from a state government to practice. It’s a legal requirement. If a state requires a license and you don’t have one, you can’t legally do the work there.

National certification is a credential from a professional body — ARDMS, ARRT, or CCI. It’s not issued by a government. It’s the standard employers look for, and in sonography it’s widely treated as the standard of practice. But on its own, it’s not a “license.”

The reason this matters: in most states, there is no sonographer license at all. So when people ask “do I need a license,” the honest answer in most places is that there’s no license to need. What you’d be pursuing is national certification, which is a different thing.

The four states that require a license

As of 2026, exactly four states require diagnostic medical sonographers to be licensed by the state:

• New Mexico — the first to mandate it. Licensure runs through the state’s Medical Imaging and Radiation Therapy Program.
• Oregon — requires anyone performing medical imaging, including sonography, to hold a license from the Oregon Board of Medical Imaging.
• North Dakota — enacted mandatory licensure through SB 2236.
• New Hampshire — requires sonographers to be licensed under its medical imaging law.

That’s the whole list. California, with its large healthcare workforce, is not on it — California does not mandate sonographer licensure. Neither do New York, Texas, Florida, or any of the other forty-two states.

What’s required in the states that do license

In the four states that license sonographers, the license is usually built on top of national certification — not instead of it.

In practice, that means the state recognizes credentials from ARDMS, ARRT, and CCI, and the license requires you to hold a current one. New Mexico, for example, recognizes ARDMS, ARRT, and CCI credentials across its sonography subspecialties. Oregon’s rules enumerate specific ARDMS, ARRT, and CCI credentials by modality. New Hampshire’s license requires completing an approved course of study and holding certification from a recognized body.

Continuing education in these states often follows the same pattern. Rather than inventing a separate state-specific requirement, the state generally points to the credentialing organization’s rules. Both New Mexico and Oregon delegate continuing-education requirements to whichever body issued your credential. So if you keep your national certification current, you’re typically meeting the state’s continuing-education expectations too.

The takeaway: in a licensing state, you don’t usually face two totally separate systems. The license tends to wrap around the national credential you’d be earning anyway.

What the other states expect instead

In the forty-six states without sonographer licensure, there’s no state license to apply for. What employers look for is national certification.

Demonstrating and maintaining competency through certification by a recognized credentialing body is treated as the standard of practice in sonography. So even where it isn’t legally required by a state, certification is what hospitals and clinics generally expect on a resume. Job postings often list it as a requirement or a “must obtain within X months of hire.”

So the situation in most states is: not legally licensed, but effectively expected to be certified. The pressure to credential comes from employers and the profession’s standards, not from a state law.

What this means if you might move

If there’s any chance you’ll relocate, the license question is worth holding in mind — but it’s not a reason to panic.

National certification travels. An ARDMS, ARRT, or CCI credential is recognized across the country. It doesn’t expire when you cross a state line. So a certified sonographer who moves from, say, Texas to Oregon already holds the credential Oregon’s license is built around — the move means applying for the state license, not starting certification over.

A few questions worth sitting with if you’re thinking about geography:

• Are you likely to end up in one of the four licensing states? If so, the license is one more application on top of certification, not a separate career track.
• Is the move toward a no-license state? Then the license question largely disappears, and certification is what carries.

The thing not to do is assume there’s a single national “sonographer license.” There isn’t. There’s national certification, which is portable, plus a state license in four specific places.