Radiation therapists deliver high dose radiation treatments to cancer patients, usually alone with the patient in a treatment vault and often for weeks of daily visits. That combination of unsupervised patient contact and powerful equipment is why the role gets screened more than once: by the state that certifies or licenses the practice, by the national body that issues the professional credential, and again by the hospital or cancer center that actually hires the person. Employers and applicants are often unclear on which of those three reviews does what. This guide walks through each layer plainly, without guessing at rules that a particular state has not actually written down.
Who Licenses Radiation Therapists
There is no single federal license for radiation therapists. Regulation happens at the state level, and states that regulate the profession typically do it through a broader radiologic technology or medical radiologic technologist statute that lists radiation therapy as one certified practice category alongside general radiography, nuclear medicine, and other imaging modalities. Florida is a clear example. Its Department of Health issues a Certified Radiologic Technologist credential with named practice categories, including a Radiation Therapy Technologist category, under the state’s Radiologic Technology licensing program, which is authorized under Florida Statutes Chapter 468, Part IV, governing radiological personnel certification. Texas takes a similar approach through its Medical Radiologic Technologist certificate, which the Texas Medical Board administers and which covers radiation therapy as one of the certified scopes of practice.
Other states handle this differently, and some states do not license or certify radiation therapists at all, instead relying on the employer and on national certification to establish competence. Where a state has no licensing statute for the role, that is the honest answer, not a gap to fill in with a guess. Anyone applying for a radiation therapist position should confirm the current rule with the licensing board or health department in the specific state where the job is located, since the agency name, the credential title and the review process all vary.
What a State Application Review Actually Covers
In states that do license or certify the role, the application generally asks about criminal history directly, and many boards also require a fingerprint based state and FBI criminal history record check as part of the file. Florida’s program, for example, uses a dedicated Background History Report Form as part of its certified radiologic technologist application packet, alongside the core application for the general radiographer, nuclear medicine technologist, radiation therapy technologist, and other certification categories described on the department’s program page. The goal of that review is not to punish every applicant with a record. It is to give the board a complete picture before it issues a credential that allows someone to operate radiation equipment on patients.
The table below summarizes the three layers of review an applicant can expect, since they check different things at different points in the process.
| Reviewing entity | What it typically checks | When it happens |
|---|---|---|
| State licensing or certification board (where one exists) | Criminal history questions on the application, and in many states a fingerprint based state and FBI criminal history record check | Before the certificate or license is issued, and again at renewal in some states |
| ARRT national certification | Self reported criminal history and ethics attestations, with an optional pre application ethics review for candidates who are unsure if a past offense will be an issue | Before the certification exam is scheduled, and whenever a certificant reports a new conviction |
| Hospital or cancer center employer | A criminal history search, verification of the state license and national certification, and a check of federal exclusion lists such as the OIG’s list of excluded individuals | During hiring, and often again on a periodic or ongoing basis for staff who keep working there |
ARRT Certification and the Ethics Review
Most working radiation therapists hold certification and registration from the American Registry of Radiologic Technologists, the national credentialing body for the profession. ARRT is not a government agency and its process is separate from any state license. It asks candidates to answer ethics questions about criminal history, substance related offenses, and certain disciplinary actions as part of the application, and it maintains its own Standards of Ethics. For candidates who have a conviction and are not sure whether it will affect eligibility, ARRT offers a review process that lets them find out before they commit to a training program or pay exam fees, rather than discovering a problem only after finishing school. This review exists precisely because a past offense does not automatically disqualify every applicant. The outcome depends on the nature of the offense, how long ago it occurred, and the specifics ARRT asks for, so no one should assume either that a record is an automatic bar or that it will always be overlooked.
Hospital and Cancer Center Credentialing
Holding a state license and a national certification gets an applicant to the hiring stage. It does not replace the employer’s own screening, which hospitals and cancer treatment centers generally layer on top because radiation therapists work with patients who are often immunocompromised and because the role carries access to treatment rooms, controlled areas and patient records. A typical hospital background check for this role verifies the state license and ARRT credential directly with the issuing agencies, runs a criminal history search consistent with state and local fair chance laws, and checks federal healthcare exclusion databases, most notably the Department of Health and Human Services Office of Inspector General’s List of Excluded Individuals and Entities, which identifies people barred from working on federally funded healthcare programs such as Medicare and Medicaid. Some hospitals also query the National Practitioner Data Bank during credentialing to check for reportable adverse licensure or privileging actions tied to a healthcare practitioner’s history. None of these checks promises that every disqualifying record will surface in every state, since coverage and reporting depend on where and when an event occurred, and the seven year rule that applies to many consumer reports varies by state as well.
Employers that use a third party to run these checks on a radiation therapist candidate are subject to the Fair Credit Reporting Act. That means a standalone disclosure and written authorization before the report is pulled, a copy of the report and a summary of rights before any adverse action, and a pre adverse action notice that gives the candidate a real chance to respond before a final decision is made. Because many of these employers are also healthcare providers, the department or practice group running the search may want to add its own exclusion list review, such as the one described above, on top of a standard consumer report rather than relying on the report alone to catch it.
What Applicants Should Expect to Disclose
Licensing boards and employers both ask direct questions about criminal history, and the honest answer matters more than people often assume. Boards and certifying bodies tend to treat an undisclosed conviction discovered later as a more serious issue than the same conviction disclosed up front, because it raises a separate question about honesty on the application itself. Applicants with a record should disclose what is asked, provide context and documentation when the process allows it, and use a pre application or pre certification ethics review where one is offered rather than waiting to find out after investing time and money in school or an exam. None of this is a promise of a particular outcome. State radiologic licensing agencies and ARRT each make their own determination, and the specific facts of the offense matter.
Frequently asked questions
Do all states require a background check to become a licensed radiation therapist?
No. Several states require fingerprint based state and FBI criminal history checks as part of a radiologic technologist or medical radiologic technologist application that includes a radiation therapy category, but other states have no licensing statute for the role at all and rely on national certification and employer screening instead. The rule varies by state, so applicants should confirm requirements directly with the licensing agency in the state where they plan to work.
What is ARRT’s role in a radiation therapist’s background check?
ARRT is the national credentialing body most radiation therapists use, and it is not a government agency, so it does not run the kind of fingerprint based criminal history check a state board can run. It does require applicants to answer ethics and criminal history questions, and it reviews candidates with qualifying convictions under its own ethics requirements, including an optional review before the exam for anyone unsure whether a past offense will be an issue.
Can a past conviction stop someone from becoming a radiation therapist?
It depends on the offense, the state, and the reviewing body’s process. A conviction does not automatically disqualify every applicant, and reviewers generally weigh the nature of the offense, how long ago it happened, and evidence of rehabilitation. Applicants with a criminal history should use an available ethics or pre application review before committing time and money to school or exam fees.
Why do hospitals run their own background checks on radiation therapists who are already licensed?
A state license or national certification confirms core qualifications, not the full picture an employer needs. Hospitals and cancer centers that hire radiation therapists generally add their own criminal history search, verification of the license and certification, and a check of federal exclusion databases such as the OIG’s List of Excluded Individuals and Entities, since the role involves direct, often unsupervised contact with patients receiving radiation treatment.
What should an applicant disclose when applying for a radiation therapist license or job?
Applicants should answer licensing board and employer questions about criminal history completely and honestly, since an undisclosed record is often treated more seriously than the offense itself. Before a third party background check can be run for employment, the FCRA requires a standalone disclosure and written authorization, and if the employer plans to act on the report it must send a pre adverse action notice with a copy of the report before making a final decision.
Does a radiation therapist background check ever involve the Nuclear Regulatory Commission?
Usually not directly. Linear accelerators used in most external beam radiation therapy do not involve radioactive material, and the sealed sources used in some brachytherapy programs are typically held under a facility’s or supervising physician’s materials license rather than the therapist’s own credential. Because of that, the NRC generally does not issue or background check an individual radiation therapist license.
The Bottom Line
A radiation therapist’s path to practice can involve up to three separate reviews: a state license or certification in states that regulate the role, national certification and ethics review through ARRT, and the hospital or cancer center’s own hiring and credentialing checks. Each one looks at a different slice of the person’s history, and each has its own disclosure requirements. Employers building that hiring process often lean on the same screening approach used for other hospital imaging staff, such as the one described in our guide to nuclear medicine technologist background checks or our overview of sonographer background checks and hospital credentialing, and pair it with a documented, FCRA compliant process. Reveal Background works with healthcare employers to build that kind of layered, compliant screening program at revealbackground.com.
This article is for general information only and is not legal or medical advice. Background check and licensing requirements vary by state and change over time, so employers and applicants should confirm current rules with the relevant licensing board, ARRT, and qualified legal counsel.
