How do you look up a dental assistant license or registration?

Whether a lookup exists at all depends on your state, because a number of boards issue dental assistants a credential of their own.

• Michigan licenses registered dental assistants (RDAs); the board's guide says the RDA license allows the holder to engage in the practice of dental assisting.
• Minnesota licenses dental assistants who graduated from a dental assisting program accredited by the Commission on Dental Accreditation and passed the required exams.
• New York lets only a person certified under Education Law §6608-b (or exempt under §6610) practice registered dental assisting — and only a certified person may use the "registered dental assistant" title.
• Washington registers dental assistants through the Department of Health.
• Oklahoma requires every dental assistant to hold a board permit before working chairside as of November 1, 2025.
• Vermont's board rules, effective October 15, 2025, bar anyone from practicing as a dental assistant unless registered — in one of two categories: traditional (not DANB-certified) or certified (DANB-certified).
• Massachusetts licenses dental assistants; its board is responsible for licensing dentists, dental hygienists and dental assistants for practice in the Commonwealth.
• North Dakota recognizes distinct assistant levels — Registered Dental Assistant (RDA), Qualified Dental Assistant (QDA), Qualified Dental Assistant-Limited Radiology Registrant, Dental Anesthesia Assistant (DAA) and unregistered — so ask which one a candidate holds.
• Nebraska credentials Licensed Dental Assistants, Alaska's board keeps a registry of registered dental assistants in good standing, and DC requires a Board of Dentistry registration to work as a dental assistant.
• California and New Jersey both list assistant credentials in their searches: California's DCA License Search includes Registered Dental Assistant License and Registered Dental Assistant in Extended Functions, and New Jersey's lists Registered Dental Assistant plus a Limited Registered Dental Assistant (orthodontics) type.

Other states issue no assistant license at all.

The Florida Board of Dentistry does not issue licenses to dental assistants; Colorado's Dental Practice Act creates no dental assistant license; Utah law defines a dental assistant as an unlicensed individual; and Montana requires no licensure, leaving the supervising dentist responsible for making sure assistants are qualified.

Kentucky is its own case: no license is issued, and registering assistants with the board is the employer dentist's responsibility.

An "RDA" in Kentucky, the board says, only means an assistant was registered by an employer dentist — it is not a recognition of any special training.

In Connecticut, the statute does not license dental assistants at all — "expanded function dental assistant" status is defined by having passed a DANB exam, the Certified Dental Assistant or Certified Orthodontic Assistant, plus an EFDA program accredited by the Commission on Dental Accreditation, and the DANB certification must be maintained.

An empty result in those states is not a red flag — there is simply no license to find.

What you verify instead is duty-specific and depends on the state: a radiography permit, an expanded-function credential, a course certificate or a national DANB certification.

Our dental assistant state requirements guide covers what each state requires before an assistant may work.

Verify against the state board's own online verification, by name or by license or registration number — not against a résumé claim or a photocopy of a certificate.

Each of the states below offers an online search or list, and some boards state outright that their list is the authoritative record: the Oklahoma State Board of Dentistry calls its online verification primary source verification and updates its dental assistant lists weekly.

The tools differ more than you might expect:

• North Dakota's free lookup is titled "Dentist, Dental Hygienist and Dental Assistant Search" and offers licensure and disciplinary information.
• South Dakota's verification covers dentists, dental hygienists, registered dental assistants and dental radiographers licensed or registered in the state.
• Tennessee's board registers dental assistants and verifies through the state Department of Health's licensure site.
• Michigan's LARA lookup includes Dental Assistant among its searchable license types — and its rules define an unregistered dental auxiliary (UDA) as unlicensed, so a UDA will not appear in the lookup at all.
• Maryland's board links its License Verification to a search covering qualified dental assistants, general and orthodontic EFDAs, and dental radiation technologists.
• Wyoming publishes downloadable lists — including an Active Dental Assistant Permit List — rather than a name search.
• Iowa's DIAL "Find a Record or License" page points a dentists, dental assistants and dental hygienists licenses search at the Iowa board's online portal.
• California's DCA License Search covers the assistant credentials above plus orthodontic assistant and dental sedation assistant permits.

Two cautions before you treat a result as complete.

First, some records are thin: on Ohio's public license look-up, only the city and state of a dental assistant applicant's address are shown — so collect the underlying documentation as well.

Second, a board record may not show every authorization in one place.

In North Dakota, a pit-and-fissure sealant endorsement appears on the registration card while restorative, nitrous oxide and Class I/II anesthesia duties require separate board permits; Tennessee's verification shows a registered assistant's additional certifications; and Oklahoma's assistant list codes expanded functions as XR (x-ray), CP (coronal polishing), SE (sealant) and N2O (nitrous oxide).

Treat verification as the practice's job, not the candidate's.

Nevada even writes the duty into its conduct rules: under NAC 631.230(1)(p), it is unprofessional conduct for a dentist who owns a practice to fail to verify the license of a dentist, dental therapist, dental hygienist or expanded function dental assistant before offering employment or contracting for services.

Whether or not your state imposes that duty, the habit is the same — run the lookup yourself, save a dated copy of what it returned, and file it with the hire's paperwork.

Our dental license verification by state directory collects the board verification links in one place.

Where a state issues no assistant license, the national credential to check is certification from the Dental Assisting National Board (DANB) — for example, its Certified Dental Assistant (CDA).

DANB says more than 35,000 dental assistants hold the CDA, which is made up of three exams.

Check it with DANB itself.

Its online Verify Credentials tool confirms whether a person holds DANB credentials: DANB national certifications such as the CDA, national exam certificates, or a DANB-administered state certificate in Arizona or Oregon.

Oregon is a state built on this arrangement: DANB certifies Oregon dental assistants for the Oregon Board of Dentistry in radiologic proficiency and expanded functions, and the board directs employers to DANB's website to verify an assistant's certifications rather than running its own lookup.

A DANB certification is not a state license, and one does not substitute for the other.

In New Mexico, the board says DANB certification gives an assistant the right to use the initials C.D.A. but does not qualify them to perform expanded functions without board certification.

Nebraska shows the reverse arrangement: its Licensed Dental Assistant credential is built on passing DANB's CDA exam plus either graduating from a dental assisting program that is accredited or earning 1,500 hours of dental assisting experience in the past five years.

So ask for the certificate, confirm it is current on DANB's lookup, and then check your own board's rules for the duties you actually need performed.

The license question does not end at the base credential.

Expanded functions and x-rays are authorized separately, with their own records — and their own tangle of titles.

DANB notes that states use different titles for the expanded-functions level of dental assisting, including Expanded Functions Dental Assistant (EFDA), Licensed Dental Assistant (LDA), Registered Dental Assistant (RDA) and Registered Dental Assistant in Extended Functions (RDAEF).

Washington even files the layers in different places: its Department of Health credentials dental assistants, expanded function dental auxiliaries, dental anesthesia assistants and dental therapists as separate professions, each with its own page.

Where the board issues the expanded-function credential itself, that is the record to pull:

• Maine licenses Expanded Function Dental Assistants as a separate board license, which requires a dental assisting certificate or a hygiene license, completion of an EFDA program and passing the required examinations.
• New Hampshire's EFDAs register with the board and hold an EFDA permit renewed in odd-numbered years before May 1, displayed where they work.
• Maryland requires anyone other than a licensed dentist or hygienist to be expressly certified by the board as a general duties EFDA — or an orthodontic EFDA — before performing that category's listed intraoral procedures.
• Missouri issues expanded functions permits in five categories — restorative I, restorative II, removable prosthodontics, fixed prosthodontics and orthodontics — so check which category a candidate actually holds.
• Louisiana bars expanded duties until an assistant is registered with the board and issued an EDDA certificate confirmation, which requires an approved EDDA course, current BLS and an approved radiology course (the rules exempt assistants who worked before July 30, 1992 for certain listed duties).
• Arkansas considers an assistant holding one or more expanded-function permits a Registered Dental Assistant, and those permits must be displayed in the dental office.

In other states the credential is a course certificate rather than anything the board issues: Georgia's expanded duty dental assistant credential is a certificate from the sponsor of the accredited course, which the employer must keep readily available in the office, and Florida's expanded-duty training is a course or program, not a state license.

And Kentucky's board issues no formal authorization to look up at all — none for expanded duties such as coronal polishing, radiography or IV access lines — leaving the employing dentist to verify the assistant's training directly.

X-rays are a separate check again.

Texas requires a Dental Assistant Radiology Certificate from its board to position or expose x-rays.

Maine requires a dental radiographer license first.

Maryland certifies dental radiation technologists.

New Jersey limits x-ray work to dentists, registered dental hygienists and holders of a dental radiologic technology license.

Indiana's Dental Radiographer License comes from the state Department of Health, on the back of an approved radiography program, clinical training and a DANB RHS or CDA exam.

Mississippi requires a Radiology Permit before exposing radiographs, South Dakota registers x-ray-taking assistants as dental radiographers, and a Tennessee registered assistant may not expose radiographs until the board has issued radiology certification.

At the other end of the spectrum, West Virginia's board says an assistant needs no permit to take intraoral x-rays, Wyoming requires a board permit for x-rays and for placing pit and fissure sealants, and in Washington the RDA registration is the record — a supervising dentist may delegate placing, exposing and processing radiographs to a registered assistant under close supervision once they have shown competence.

Permits can also be specialty-specific.

California's board issues orthodontic assistant and dental sedation assistant permits, both searchable in the DCA License Search; the orthodontic assistant permit requires, among other elements, a board-approved orthodontic assistant course, infection control and practice-act courses, current BLS, fingerprints and a written exam — and the current permit must be publicly displayed at the treatment facility where the holder works.

In South Dakota, an assistant who is not registered as an RDA may not perform expanded functions, and monitoring patients under general anesthesia, deep sedation or moderate sedation requires a board permit.

Rhode Island is the outlier: the only dental assistant license type in its verification dropdown is Maxillofacial Surgery Dental Assistant.

When a duty matters to the role, name the duty in your screening and verify the exact permit for it — our guide to x-ray certification covers the radiography layer in detail.

Lookups live on state board sites, and portals move — when a link in your notes dies, search the board's site for "verification" rather than trusting a bookmark.

Verify every credential yourself against the primary source, and where your state issues no record at all, document what you did check: course certificates, a current DANB lookup, a note of the board you contacted.

For the links themselves, our dental license verification by state hub has a page for every state and DC — including California, Michigan, Oklahoma, North Dakota and Oregon.

Two related reads.

Hygienists are credentialed separately from assistants, so a hygienist hire runs through a different record — see our hygienist license lookup guide.

And if you are still shaping the role itself, our how to hire a dental assistant guide covers the whole process from writing the posting to onboarding.