How to Verify a Dentist License (DDS, DMD)

Why Dentist License Verification Matters

Practicing dentistry without a valid license is a criminal offense in every state. State dental boards can suspend or revoke licenses for clinical incompetence, disciplinary violations, fraud, or substance abuse — and disciplinary actions in one state are reportable to the NPDB, which other states and credentialing organizations query during the privileging process.

For dental service organizations (DSOs), group practices, and hospital dental departments, credentialing every provider is both a regulatory requirement and a liability issue. Insurance networks — Delta Dental, Cigna, Aetna, MetLife — require license verification before adding providers to their panels and re-credential providers on a two-year cycle. A single unlicensed provider on the panel exposes the organization to regulatory action and potential clawback of paid claims.

For patients and employers verifying a dentist independently, the process takes under five minutes using the state board's public search portal. There is no reason to accept a copy of a license without checking the source directly.

Dental Professional License Types

Dental practices employ multiple license types. Each is separately licensed and verified through different channels.

National Board Exams and Licensing Pathway

To obtain a dental license, a DDS or DMD graduate must pass:

• NBDE Part I and Part II (National Board Dental Examinations, administered by the Joint Commission on National Dental Examinations) — or the INBDE (Integrated National Board Dental Examination) which replaced the two-part exam in 2020
• ADEX (ADEX Dental Licensing Examination) or another regional clinical exam accepted by the licensing state — most states now accept ADEX, CDCA (Commission on Dental Competency Assessments), or WREB (Western Regional Examining Board)
• A state-specific jurisprudence exam covering dental law for that state

Passing the national boards does not grant a license. License issuance is handled entirely by the state dental board. A dentist licensed in California must apply separately and meet additional requirements to practice in Texas.

State Dental Board License Lookup Portals

Every state dental board maintains a public license search. Most allow search by name, license number, or both. The table below covers the 10 states with the largest dental provider populations.

For all other states, the ADA (American Dental Association) maintains a directory of state dental board websites at ada.org. All 50 state boards are members of the Association of State and Territorial Dental Directors (ASTDD).

NPI Registry and NPDB

Two federal databases supplement state license lookups for dental credentialing:

DEA Registration for Dentists

Dentists who prescribe opioids (hydrocodone, oxycodone, codeine), benzodiazepines, or other controlled substances must hold an active DEA registration in the state where they prescribe. DEA registrations are state-specific — a dentist with a California DEA registration cannot legally prescribe controlled substances in Texas without a separate Texas DEA registration.

DEA registration status is not publicly searchable. Verification requires:

• Requesting a copy of the DEA certificate directly from the provider
• Confirming the certificate is not expired (DEA registrations renew every 3 years)
• Verifying the registered state matches the practice state
• For institutional credentialing: confirming registration via the DEA Diversion Control Division

Many dental practices require all prescribing dentists to maintain an active DEA registration regardless of their prescribing frequency, to avoid delays when controlled substances are clinically necessary.

Dental Specialty Board Credentials

The ADA recognizes nine dental specialties, each with its own specialty board. Board certification (Diplomate status) is separate from licensure and indicates demonstrated competency beyond general practice requirements.

Important: A dentist may legally perform orthodontics, oral surgery, or other specialty procedures without specialty board certification — the license covers all of dentistry unless restricted. Board certification indicates advanced training and examination, but a general dentist performing Invisalign or extracting wisdom teeth is not unlicensed.

Dental Hygienist and Dental Assistant Verification

OIG LEIE Exclusion Check

The Office of Inspector General (OIG) maintains the List of Excluded Individuals and Entities (LEIE). Any dental provider excluded from the LEIE cannot participate in Medicare or Medicaid. Practices that bill federal healthcare programs must check every employee and contractor against the LEIE before hiring and on a monthly basis thereafter.

Check at oig.hhs.gov/exclusions — free public search by name or NPI. An exclusion match must be cleared before the provider can work in any facility that bills Medicare or Medicaid. Knowingly billing for services provided by an excluded individual results in significant civil monetary penalties.

Verification Requirements by Employer Type

Red Flags in Dental License Verification

• ✗ License expired or lapsed. A dentist whose license expired even one day ago is legally unlicensed. Many states allow a grace period for renewal but not for practice — check for "active" vs. "expired" status explicitly.
• ✗ License in a different state only. A dentist licensed only in California cannot practice legally in Nevada without obtaining a Nevada license. Interstate practice is a common compliance gap in locum tenens and traveling provider arrangements.
• ✗ Disciplinary history — probation, suspension, or revocation. The state board record shows the license status but may not detail the reason. Request the full public order from the board if probationary conditions are listed.
• ✗ Voluntary surrender under investigation. Some providers surrender their license rather than face disciplinary proceedings. A voluntarily surrendered license may not show a formal action but is functionally equivalent to revocation.
• ✗ Anesthesia permit missing for IV sedation or general anesthesia. Deep sedation and general anesthesia require a separate anesthesia permit in most states. A dentist performing IV sedation without the required permit is practicing outside the scope of their license.
• ✗ DEA registration expired or wrong state. An expired or out-of-state DEA registration means any controlled substance prescriptions written are technically illegal. Check the expiration date and the registered state explicitly.
• ✗ OIG exclusion match. Any confirmed LEIE match disqualifies the provider from participation in Medicare and Medicaid billing. Do not assume a match is a false positive without clearing it with the OIG.

Dental Provider Verification Checklist