§ 4.1 — Oregon
This page lists 41 people and firms with a current radon testing credential whose official record names Oregon. Each row shows the credential number, the issuing body, and its own verification date. The latest record check on this page was October 13, 2026; other records may have been checked earlier. Source: the official file linked on each listing. Verify the number before you hire.
Testing listings are people credentialed to measure radon. Mitigation listings are people credentialed to install a reduction system. Some people appear on both lists when the official file says they hold both. The list is ordered by the city or county on each record. That place is where the record is filed, not a promise about where the person works.
current NRPP № 113263
current NRSB № RMS-24MS084
current NRPP № 112699
current NRSB № RMS-24MS081
current NRPP № 103186
current NRPP № 112037
current NRSB № RMS-25MS030
current NRSB № RMS-24MS080
current NRPP № 113145
current NRPP № 112977
current NRPP № 115261
current NRPP № 115465
current NRPP № 114966
current NRPP № 114656
current NRPP № 110437
current NRPP № 114148
current NRPP № 114995
current NRPP № 110263
current NRPP № 112059
current NRPP № 115796
current NRPP № 115868
current NRPP № 107333
current NRPP № 107076
current NRPP № 110576
current NRPP № 110550
current NRPP № 109634
current NRPP № 111322
current NRPP № 111365
current NRPP № 103541
current NRPP № 115566
current NRPP № 115379
current NRPP № 109307
current NRPP № 114949
current NRPP № 111950
current NRPP № 115474
current NRPP № 113613
current NRPP № 113684
current NRPP № 112835
current NRPP № 107827
current NRPP № 114977
current NRPP № 106626
Appendix A
Open the source link on this page and match the name and credential number to the official file. Status can change after a record’s verification date. The latest record check on this page was October 13, 2026; check each record’s date. If the official page disagrees with this directory, trust the official page. We do not invent credential numbers.
The U.S. EPA does not certify radon contractors. EPA publishes guidance on finding a qualified radon service provider and points to state programs and national certifications. This directory is not affiliated with EPA. We do not display EPA-certified badges.
Last verified on an individual record is the date we checked its official source. The latest credential check on this page was October 13, 2026; other records may have earlier dates. We refresh the roster monthly. Current means the person appeared as currently credentialed on the source at that record’s verification date. Credentials can expire between refreshes, so follow the source link.
Appendix A.2
The full checklist: Certified radon tester: what they do and how to hire one
Oregon pages here use current NRPP or NRSB certifications. City pages use the city printed on that record, not a ZIP-radius search. A national certification is not a state license in Oregon. Some states require a separate state credential to work legally. Read the methodology. Credential status can change.