Stansbury, Michael
Emmitsburg, MD
Listed for: Mitigation
Verified: Pennsylvania state license
Professionals
Radon professionals in Maryland
Who tests and fixes radon in Maryland, what Maryland's own program says about licensing, and how to check a credential before you hire.
Updated October 2, 2026
Short answer
Radon professionals in Maryland, in brief
No business that Maryland itself licenses or certifies is listed on Radon411 yet. Ask Maryland Department of Health what it requires before you hire.
5 businesses with an address in Maryland appear in a separate list because another state's registry lists them. That does not mean Maryland licenses them.
The rule
Does Maryland license radon professionals?
Maryland's radon program page, checked on September 25, 2026, does not say whether the state licenses or certifies radon professionals. Ask the program before you hire.
Maryland is not on the list of states with radon credentialing programs that EPA's state contacts page publishes. Licensing is done by the state, not by the national programs, and EPA requires states that receive radon grants to give the public a list of only those providers credentialed by the state or by NRPP or NRSB.
Radon411 reads no licensing list for Maryland; Maryland's radon program is the place to ask who works there.
State program
Maryland's radon program
The state's own radon program: the place to ask who may work in the state.
Maryland Department of Health
Its page covers free or discounted test kits.
Phone 1-866-703-3266
Visit the program's page (opens in a new tab)Read September 25, 2026
The directory
Radon professionals listed for Maryland
None that Maryland licenses yet. The businesses below have an address here and another state licenses them.
By city
5 cities in Maryland with a listed business address.
No business licensed by Maryland is listed here yet. Where Maryland licenses radon professionals, its own list is the complete one.
Located in Maryland, licensed by another state
These businesses have an address in Maryland, and another state's registry lists them. That does not mean Maryland licenses them: check with Maryland's radon program before hiring one for work here.
5 professionals located in Maryland and listed by another state.
On this page: 1 mitigation, 4 testing
Mitigation (1)
Testing (4)
Gress, Vanessa
Adamstown, MD
Listed for: Testing
Verified: Pennsylvania state license
Melchior, Ronald
Nottingham, MD
Listed for: Testing
Verified: Pennsylvania state license
O'Connor, John
Keymar, MD
Listed for: Testing
Verified: Pennsylvania state license
Pickholtz, Jerry
Westminster, MD
Listed for: Testing
Verified: Pennsylvania state license
Nearby
Listed professionals in states next to Maryland
A business licensed in a neighboring state is licensed there, not necessarily in Maryland. Check Maryland's rule above before you hire one.
Before you hire
How to check a credential in Maryland
Maryland's own list
Start with Maryland's radon program. Licensing is done by the state, and most states can give you a list of radon service providers working there.NRPP's search
The National Radon Proficiency Program's search finds its Certified Mitigation Specialists and Certified Measurement Professionals by area, by name, or by the 6-digit NRPP ID number a professional can give you.NRSB's search
The National Radon Safety Board's search finds a professional in your area, or confirms that a named professional is NRSB certified.The ID card
The programs usually issue a photo ID card showing the holder's qualifications and its expiry date. Ask to see it, and if in doubt, check with the body that issued it.
Hiring
Hiring in Maryland
A tester
Ask for the credential and ID card, how the test will be guarded against interference, and when the report will come. EPA recommends an independent, qualified tester for the test after a system is installed.
A mitigation contractor
Get more than one estimate, contact references, and ask for a written proposal and a contract before any work starts.
Questions
Common questions about Maryland
- Does Maryland require radon professionals to be licensed?
Maryland's radon program page, checked on September 25, 2026, does not say whether the state licenses or certifies radon professionals. Ask the program before you hire.
Maryland is not on the list of states with radon credentialing programs that EPA's state contacts page publishes.
- How do I find a certified radon mitigator in Maryland?
No business is listed for mitigation in Maryland on Radon411 yet.
Your state radon program can help you find qualified professionals in the state, and NRPP and NRSB, the two national proficiency programs EPA names, each publish a search of the professionals they certify.
- Who tests for radon in Maryland?
No business is listed for radon measurement in Maryland on Radon411 yet.
A qualified radon tester is very often a home inspector, and your state radon office can give you its approved list of radon testing companies.
- Does Maryland offer free or discounted radon test kits?
Maryland Department of Health's page, checked on September 25, 2026, says:
Maryland residents may be eligible for a free radon test kit.
- How current are the Maryland listings?
Radon411 reads no licensing list for Maryland; Maryland's radon program is the place to ask who works there.
- Is every business on this page licensed in Maryland?
No listing here is a license. The first list holds businesses Maryland's own registry lists, or that confirmed their own listing; each card names its source.
5 businesses with an address in Maryland appear in a separate list because another state's registry lists them. That does not mean Maryland licenses them.
No business pays to be listed, labelled or placed higher here, and Radon411 sells no leads. How listings are verified. Run a radon business in Maryland? Claim your listing.
Next steps