How to Verify a State Medical License in All 50 States

By DEA Lookup.com, Inc. · Updated October 3, 2026

Short answer: There is no single national license database. To verify a state medical license, go to the licensing board in each state where the provider practices, look up the license for the correct profession, and confirm it is active, unexpired, and free of restrictions or disciplinary action. Save a dated record of each check. To cover many providers or many states, use a service that pulls license data directly from the state boards and monitors it for changes.

Why state license verification is harder than it looks

Every state licenses its own physicians, physician assistants, nurse practitioners, dentists, and pharmacists, and many states have several boards. That creates practical problems:

Many separate sources. All 50 states have their own boards, and some states have separate boards for MDs and DOs, or for nursing and pharmacy. Each board has its own website and search tools.
Different formats. License number formats vary by state and profession. Prefixes, leading zeros, and suffixes are entered differently from one board to the next.
Duplicate numbers. In some states, the same license number can belong to different people in different professions, so a number alone may match the wrong person. Confirm the name too.
Multiple states per provider. Providers who practice across state lines, including by telehealth, need a license in each state where their patients are located.

How to verify a state license, step by step

List every state where the provider practices. Include telehealth states, not just the home state.
Find the right board and license type. Match the profession (MD, DO, PA, NP, DDS/DMD, RPh) to the board that licenses it in that state.
Look up the license with the board. Search by license number and confirm the name matches.
Confirm the details. Check that the license is active, the expiration date hasn't passed, and there are no restrictions, probation, or disciplinary actions.
Save proof. Keep a dated copy of the board's result showing what you checked and when. Auditors and accreditors will ask for it.
Monitor it. Recheck at expiration at a minimum. Many accreditors now expect ongoing monitoring; NCQA requires license expirations and sanctions to be checked at least every 30 days.

Do licensure compacts change anything?

Compacts make it easier for providers to get licensed in more states. They do not remove the need to verify each state.

Compact	Who it covers	What it means for verification
Interstate Medical Licensure Compact (IMLC)	Physicians (MD and DO)	Speeds up applications, but each state still issues its own full license. Verify each one separately.
Nurse Licensure Compact (NLC)	Registered nurses and LPNs	One multistate license from the home state. It does not cover nurse practitioners or other advanced practice nurses.
APRN Compact	Nurse practitioners and other APRNs	Has been slow to reach the number of states it needs to take effect. Verify NP licenses in each state where they practice.
PA Licensure Compact	Physician assistants	Adopted by many states, but still being set up before it issues privileges to practice. Verify PA licenses in each state for now.

Compact rules and membership change often. Check the compact's own website for current status.

Free lookups and other sources

A few national tools pull together license information across states. They are useful for a quick check, but they are not a substitute for the issuing board when you need formal verification:

FSMB DocInfo: physician license and board action information from state medical boards.
Nursys: nurse license lookup from participating boards of nursing, run by NCSBN.
NABP: pharmacist license verification through the National Association of Boards of Pharmacy.
National Practitioner Data Bank (NPDB): not a license database, but hospitals must query it when granting clinical privileges and every two years after. It reports malpractice payments and adverse actions.

Verifying licenses at scale

Checking one license on a board website takes a few minutes. Checking hundreds of providers across dozens of states, and rechecking them every month, does not scale by hand. Pharmacies validating prescribers, hospitals credentialing medical staff, and software platforms that onboard providers typically automate it:

An API that queries state board data in real time and returns a consistent result for every state.
Name validation to catch duplicate license numbers.
Input cleanup so differently formatted license numbers still match.
A saved proof of licensure for each check.
Disciplinary action results where boards report them.

How DEA Lookup.com helps

For over 15 years, DEA Lookup.com has built primary source verification tools for pharmacies, distributors, hospitals, and credentialing teams:

State Medical License API: real-time primary source verification from state board databases in all 50 states, for MD, DO, PA, NP, DDS/DMD, RPh, pharmacy, and nursing home administrator licenses. It includes name validation for states with duplicate license numbers, AI repair of license inputs, a saved snapshot of the proof of licensure, disciplinary actions in reporting states, and JSON, XML, or delimited output.
State License Search – Professional: one search form linked to over 100 state license databases, organized by state and profession.
DEA to State License Cross Reference: match federal DEA numbers to state license numbers.
DEA License Lookup: manually verify the DEA registration that goes with each state license or manually validate state license numbers with the state license search option.

Frequently asked questions

Is there a national database for verifying medical licenses?

No single government database is the primary source for every state license. Each state licensing board is the primary source for the licenses it issues. Aggregated lookups such as FSMB's DocInfo for physicians, Nursys for nurses, and NABP for pharmacists are useful starting points, but formal verification should come from the issuing board or an accepted equivalent source.

Does the Interstate Medical Licensure Compact give physicians one license for all states?

No. The Interstate Medical Licensure Compact speeds up the application process, but each participating state still issues its own full license. A physician licensed through the compact holds a separate license in each state, and each one must be verified with that state's board.

Do I need to verify a license in every state where a provider practices?

Yes. Providers generally must be licensed in the state where the patient is located, including for telehealth. Verify an active license in each state where the provider practices or treats patients, not just their home state.

How often should state licenses be re-verified?

At least when each license expires, and more often if your accreditor requires it. Under NCQA standards effective July 1, 2025, license expirations and sanctions must be monitored at least every 30 days. Many organizations now monitor licenses continuously rather than checking only at onboarding and renewal.

Is a DEA registration tied to a state license?

Yes. A DEA registration is issued for a specific state, and a practitioner needs an active state license in that state to hold it. A provider who prescribes controlled substances in several states needs an active state license and a DEA registration in each one.

Verify state licenses in all 50 states with primary source data. Subscribe today or email sales@dealookup.com to schedule a demo.

DEA Lookup.com is not affiliated with the Drug Enforcement Administration or any state licensing board. This guide is general information, not legal or compliance advice.