A letter of certification for a professional license is an official document issued by your licensing board that confirms your license is real, states whether it’s active or restricted, and discloses any disciplinary history on your record. You’ll most often need one when applying for a license in another state, getting credentialed by a hospital or employer, or seeking authorization to practice abroad. The request goes to the board that issued your license, and in almost every case the board sends the letter directly to the receiving party rather than to you.
What the Letter Contains
A typical letter includes your full legal name, the specific license type, your license number, your original issue date, and your expiration date. It states whether the license is currently active, inactive, expired, or restricted.
The disciplinary section is the one that matters most to the receiving party. The letter discloses any public sanctions, restrictions, suspensions, or revocations on your record. That transparency is the whole purpose of the document. Some boards also include examination pass dates or scores, though this varies by profession and state. If you know there is something on your record, assume it will appear.
When You Need One
The most common trigger is applying for a license in a new state. When you want to practice across state lines, the receiving board needs independent confirmation that your existing license is legitimate and in good standing. Most states require this verification as part of their endorsement or reciprocity process, and they won’t accept a photocopy of your license card.
Hospitals rely on these letters during credentialing. Before granting clinical privileges, a hospital must verify your license through the original issuing board. The Joint Commission, which accredits most U.S. hospitals, requires that verification come directly from the licensing authority or an approved credentials verification organization rather than from the practitioner’s own records.1Joint Commission International. Primary Source Verification – Definition/Requirements Handing over a copy of your license does not satisfy this requirement.2Joint Commission International. Verification – Primary Source Verification – Definition
Federal agencies hiring for regulated positions frequently require license certification during onboarding. Large private employers and staffing agencies do the same, particularly in healthcare, engineering, and accounting.
How to Request One
Start by gathering the identifiers your board uses to find your file. At minimum you’ll need your license number. Many boards also require your Social Security number or the last four digits for identity verification. Healthcare providers should have their National Provider Identifier on hand, since some boards cross-reference federal databases.
Most boards post their request forms online under a section labeled something like “Licensee Services,” “Verification,” or “Board Forms.” The form asks for your identifying information and the exact mailing address or electronic portal details for the recipient. Call the receiving board first and confirm precisely where they want the letter sent. A letter directed to the wrong department at a large state agency can sit in limbo for weeks.
Make sure every name, number, and date on your request matches what’s already in your board’s file. If you’ve had a legal name change since your license was issued and never updated the board, do that first. A name mismatch is one of the most common reasons requests get kicked back.
Why the Board Has to Send It Directly
Most receiving boards and credentialing bodies will not accept a certification letter you hand over yourself, even if it’s a genuine original with a raised seal. The standard is primary source verification, meaning the information has to travel from the issuing board to the requesting entity through secure channels. Acceptable methods include direct correspondence, documented phone verification, or secure electronic transmission.2Joint Commission International. Verification – Primary Source Verification – Definition
When you submit your request, you provide the recipient’s mailing address or electronic portal details so the board can send the letter straight there. Some boards will issue a sealed copy to you as well, but don’t count on the receiving agency accepting it. Always confirm the delivery format the receiving party requires before you submit.
Fees and Processing Times
Fees vary by board and profession, but most fall in the range of $10 to $75. Specialized professions or boards that perform extensive record searches sometimes charge more. Online requests usually accept credit cards; paper applications may require a money order or certified check.
Processing times are harder to pin down. Boards with fully digital systems can dispatch a letter within a few business days. Others take several weeks, and boards with backlogs can take longer still. When you’re on a deadline, ask the board about current turnaround times before submitting, and build in a buffer. Expedited processing is available at some boards for an additional fee, but not everywhere.
Faster Paths for Some Professions
For certain professions, centralized systems have largely replaced individual letters from each state board.
Physicians and Physician Assistants
The Federation of State Medical Boards operates the Federation Credentials Verification Service, which builds a permanent repository of your verified core credentials. Once your information is in FCVS, you can direct that profile to multiple state medical boards, hospitals, and employers without repeating the verification.3Federation of State Medical Boards. Federation Credentials Verification Service
The initial application fee is $395 for physicians and $170 for physician assistants. Each additional profile forwarded to a new entity costs $99 for physicians or $65 for physician assistants.4Federation of State Medical Boards. Cost and Fees That is more than a single board’s certification fee, but if you’re applying in multiple states or expect to move again, the lifetime repository can be worth it.
Nurses
Nursys, operated by the National Council of State Boards of Nursing, handles license verification for endorsement electronically. For participating boards, verifications are processed online and made immediately available to the receiving jurisdiction.5Nursys. Nursys License Verification (NLV) FAQ NCSBN no longer sends or forwards paper verification forms for boards in Nursys.
The fee is $30 per license type per receiving jurisdiction. Verifying both an RN and an LPN/VN license to one state costs $60. If you hold the same license type from multiple participating states, you’re only charged once for verification to a single jurisdiction.5Nursys. Nursys License Verification (NLV) FAQ Nursys does not cover advanced practice (APRN) licenses or temporary licenses, and not every state board participates. If your board isn’t in the system, request verification from it directly.
Compact Licenses
If your profession participates in an interstate compact, you may already have authority to practice in other member states without a separate license or certification letter. The Nurse Licensure Compact allows nurses to practice in any NLC member state using their home-state license.6NCSBN. Licensure Compacts For physicians, the Interstate Medical Licensure Compact offers an expedited pathway to licensure across 43 member states and 2 U.S. territories as of early 2026.7Interstate Medical Licensure Compact. Physician License The IMLC doesn’t eliminate the state license requirement, but it handles much of the verification internally.
Before requesting a letter, check whether your profession has a compact and whether both the issuing and receiving states participate.
Using the Letter Internationally
A standard letter of certification usually isn’t enough on its own for use abroad. Countries that participate in the 1961 Hague Apostille Convention, over 120 nations, require an apostille certificate attached to official documents before they will recognize them. For a state-issued license certification, the apostille comes from the Secretary of State in the state that issued the document, not from a federal office.8U.S. Department of State. Preparing a Document for an Apostille Certificate
The document must carry original signatures and seals. Don’t notarize the original, because that can invalidate it for apostille purposes. If the destination country requires a translation, use a professional translator and have the translation notarized separately. Countries outside the Hague Convention require an authentication certificate instead, which runs through a different process at the U.S. Department of State.8U.S. Department of State. Preparing a Document for an Apostille Certificate
Check Your Record Before You Request
Occasionally a certification letter reflects incorrect information: a misspelled name, wrong dates, or a disciplinary notation that shouldn’t be there. Catching that after the letter has already been sent creates real complications, so verify your own records first.
Most boards let you look up your license status through their online portal. Do that before submitting a request. If something is wrong, contact the board directly with supporting documentation, such as a court order for a name change or corrected records. Boards have processes for amending their files, but corrections take time, and you want the fix in place before the letter goes out.
If you believe a disciplinary action was imposed improperly, that is a more complex situation. You generally have to exhaust the board’s administrative appeal process before pursuing legal remedies, and consulting a licensing attorney before requesting the letter is worth the investment.
Plan Around Freshness Windows
Certification letters are not permanent. Receiving boards and credentialing bodies typically want recent verifications, often no more than 90 to 180 days old, though exact freshness requirements vary. A letter you obtained six months ago for one application may not be accepted for a new one.
Work backward from your deadline. Confirm what the receiving entity requires in terms of delivery method, content, and how recent the letter must be. Check your own records for accuracy. Then submit the request with enough lead time for processing delays. If you work in healthcare and expect multiple applications, consider whether FCVS or Nursys will serve you better than individual board requests.