GroundRosterJohn JohnsonLicensed
| Name | John Johnson |
| Company | Mark Johnson Plumbing |
| License number | 31794, 31795 |
| License type | Basic License, Combination License |
| License status | Active — LDH licensed |
| Based in | Ruston, Louisiana 71273 |
| Phone | (318) 255-1322 |
"Based in" is the city on the business's state license record. That can be a mailing address; it doesn't tell you where the business works.
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How to verify this license
We publish the license details exactly as they appear in Louisiana's official licensing records; we do not vouch for the business itself. Before hiring, look up license #31794, 31795 directly with the state, confirm it is still active, and ask for a current certificate of insurance.
Source: Louisiana Dept. of Health (LDH), last checked 2026-08-17. Verify at the official source.
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