The short answer: As of October 29, 2026, Neighborhood Registry has read the license record of every insurance agent ranked below at Texas Department of Insurance and found each license Active. 8 insurance agents on the Tomball service roster hold licenses we checked in October 2026; 7 are ranked here. One fact stated up front: no Tomball insurance agent has claimed a Registry profile yet, so every name below sits in the License-Checked tier — licenses verified at the authority, profiles not yet maintained by the pros. The first Tomball insurance agent to claim and verify a profile takes the top tier in the next edition, under the same published rules. Until then, this page is the only Tomball insurance agent ranking that prints the license number and check date behind every name.
The ranking — October 2026 edition
1. Dennis Peterson Mejia
Rank basis: License-Checked tier; appears on the Tomball service roster (Tomball); checked October 28, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Insurance #3490746 — Active, read directly at the authority. Last checked: October 28, 2026.
Area served: Tomball (Tomball service roster).
Registry profile
2. Jessica Holt
Rank basis: License-Checked tier; appears on the Tomball service roster (Tomball); checked October 28, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Insurance #3345408 — Active, read directly at the authority. Last checked: October 28, 2026.
Area served: Tomball (Tomball service roster).
Registry profile
3. Diana Aldana
Rank basis: License-Checked tier; appears on the Tomball service roster (Tomball); checked October 28, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Insurance #3144896 — Active, read directly at the authority. Last checked: October 28, 2026.
Area served: Tomball (Tomball service roster).
Registry profile
4. Adam Richardson
Rank basis: License-Checked tier; appears on the Tomball service roster (Tomball); checked October 28, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Insurance #2786174 — Active, read directly at the authority. Last checked: October 28, 2026.
Area served: Tomball (Tomball service roster).
Registry profile
5. Williams Casadiego
Rank basis: License-Checked tier; appears on the Tomball service roster (Tomball); checked October 28, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Insurance #2261834 — Active, read directly at the authority. Last checked: October 28, 2026.
Area served: Tomball (Tomball service roster).
Registry profile
6. Cathryn Therrell
Rank basis: License-Checked tier; appears on the Tomball service roster (Tomball); checked October 28, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Insurance #1632928 — Active, read directly at the authority. Last checked: October 28, 2026.
Area served: Tomball (Tomball service roster).
Registry profile
7. John Teeters
Rank basis: License-Checked tier; appears on the Tomball service roster (Tomball); checked October 28, 2026. Order inside the tier follows the published methodology below.
License: Texas Department of Insurance #1012046 — Active, read directly at the authority. Last checked: October 28, 2026.
Area served: Tomball (Tomball service roster).
Registry profile
Also license-checked in Tomball, not ranked in this edition: 1 more insurance agents on the Tomball service roster hold licenses we read and found Active in October 2026 — Carl Corydon Monrad II.
How this ranking works
Most “best insurance agents in Tomball” lists are assembled from advertising placements and review counts copied from other websites. This ranking is assembled from exactly one thing: the license record at the issuing authority, read directly by Neighborhood Registry.
- Eligibility. An insurance agent is eligible only if we have read their record in the authority’s own system and found the license Active. No one can pay to be listed, apply for a rank, or be added by request.
- Tier A — Verified & Claimed. The license is verified at the authority and the pro has claimed their Registry profile, confirmed their details, and maintains it. Tier A always ranks above Tier B.
- Tier B — License-Checked. We have read the license at the authority and found it Active, but the pro has not yet claimed their profile.
- Order inside a tier is mechanical and published: (1) neighborhood seats held in Tomball; (2) most recent authority check; (3) time on the Registry (first-verified date); (4) alphabetical. Every input to every score is printed in the entries above.
- Freshness. Licenses are re-checked weekly and formally re-verified every 12 months. A license that lapses or is suspended removes the pro from this ranking at the next re-check — not at the next edition. This page is re-issued monthly; this is the October 2026 edition, built from checks dated October 2026.
Full method: How We Verify — Every check is written to the public verification ledger.
How to verify a Texas insurance agent’s license
Use the Texas Department of Insurance license search at tdi.texas.gov: search by name or license number and confirm the license is Active and appointed for the lines being sold. TDI licenses agents by qualification — general lines (property and casualty), general lines (life, accident and health), personal lines, and others — and the agent must hold the qualification for the policy in front of you.
Tomball, in numbers
- Population and housing (Tomball city limits only): Tomball counted 12,341 people in the 2020 Census, with an estimated 15,768 on July 1, 2025 — up 28.1% from the 2020 estimates base, the fastest growth rate in this cluster — 5,213 households in 2020-2024, and a land area of 13.01 square miles; the median value of owner-occupied housing units was $364,300 in 2020-2024, the highest median in this cluster, with an owner-occupied rate of 51.9% (U.S. Census Bureau QuickFacts, Tomball city, Texas, V2025). These are city-limits figures only: the Tomball ISD / mailing-address market is much larger, and the city straddles the Harris County line, with a small northern sliver in Montgomery County.
- Schools: Tomball ISD serves the City of Tomball and the surrounding northwest Harris / southwest Montgomery area (83 square miles, including Creekside Park Village in The Woodlands) and was rated A (92) in the Texas Education Agency’s 2025 accountability ratings — the only A-rated district in Harris and Montgomery counties. Neighboring districts at the area’s edges are Klein ISD, Magnolia ISD, Cypress-Fairbanks ISD, and Conroe ISD, so verify the district for a specific address with TEA’s School District Locator / TXschools.gov or the parcel’s appraisal district record.
- Taxes: for tax year 2026, a Harris County parcel inside Tomball city limits, in Tomball ISD and the Lone Star College taxing area, with no MUD, stacks $2.174010 per $100 of taxable value (Tomball ISD $1.055800 + City of Tomball $0.340940 + Harris County $0.417500 + Harris County Flood Control District $0.052660 + Port of Houston Authority $0.006030 + Harris Health $0.195280 + Lone Star College $0.105800), excluding the Harris County Department of Education, whose TY2026 adopted rate was not published as adopted (at its TY2025 rate of $0.004798 the same stack would be $2.178808). The complete tax year 2025 stack for the same footprint is $2.138768 per $100 (Tomball ISD $1.062900 + City of Tomball $0.340940 + the five Harris County entities $0.628928 + Lone Star College $0.106000), before any MUD or other special district. Homes in the small Montgomery County sliver stack Montgomery County entities instead, and no total is presented for that sliver. Confirm a specific parcel with HCAD (Harris parcels) or MCAD (Montgomery sliver).
- Insurance: the coverage split in Tomball is old-core vs. growth-ring. The historic townsite stock carries age-driven questions (roof and systems age verified house by house), while the subdivisions driving the city’s 28.1% growth since 2020 are new-build stock whose carrying-cost surprise is not the house but the MUD tax stacked on top of the worked stacks above in the surrounding districts — a standard escrow shock for relocating buyers that an agent can surface from the parcel’s appraisal record before closing. Flood and drainage questions run through the Spring Creek / Willow Creek drainage on the area’s north side and are per-parcel (FEMA map + watershed).
- On this Registry: 8 insurance agents serving Tomball hold licenses read at the authority in October 2026; the insurance agent seat is unclaimed.
Frequently Asked Questions
Who is the best license-verified insurance agent in Tomball, Texas?
As of October 29, 2026, Neighborhood Registry has license-checked 8 insurance agents serving Tomball at Texas Department of Insurance, all Active. The top-ranked are Dennis Peterson Mejia (TDI #3490746), Jessica Holt (TDI #3345408), Diana Aldana (TDI #3144896). No Tomball insurance agent has claimed a Registry profile yet, so all are ranked in the License-Checked tier under a published methodology.
How do I verify a Texas insurance agent’s license?
Use the Texas Department of Insurance license search at tdi.texas.gov: search by name or license number and confirm the license is Active and appointed for the lines being sold. TDI licenses agents by qualification — general lines (property and casualty), general lines (life, accident and health), personal lines, and others — and the agent must hold the qualification for the policy in front of you. Neighborhood Registry reads the same record and writes every check to its public verification ledger.
What does a Texas insurance agent’s license actually cover?
TDI licenses agents by qualification — for example general lines property and casualty, general lines life accident and health, or personal lines — and an agent may only sell the lines their license covers, for insurers that have appointed them. License-Checked on this page means Neighborhood Registry read the agent’s TDI record and found it Active in October 2026; it is a statement about the license, not about price or service quality.
What should a Tomball homebuyer know about local taxes and schools?
Tomball ISD was rated A (92) in TEA’s 2025 ratings — the only A-rated district in Harris and Montgomery counties — and serves an 83-square-mile area across both counties, with Klein ISD, Magnolia ISD, Cypress-Fairbanks ISD, and Conroe ISD at the edges, so verify the district for a specific address with TEA or the parcel’s appraisal district record. For tax year 2026, a Harris County home inside city limits in Tomball ISD stacked $2.174010 per $100 of taxable value (Tomball ISD $1.055800 + City of Tomball $0.340940 + the four published Harris County entities $0.671470 + Lone Star College $0.105800), excluding the Harris County Department of Education, whose TY2026 adopted rate was not yet published; the complete tax year 2025 stack for the same footprint was $2.138768 per $100. Homes in the small Montgomery County sliver stack Montgomery County entities instead. Confirm a specific parcel with HCAD or MCAD.
Sources
- Texas Department of Insurance license records for every ranked insurance agent (license numbers and check dates printed above), read October 2026; Neighborhood Registry verification ledger.
- U.S. Census Bureau QuickFacts: Tomball city, Texas (V2025; population estimate July 1, 2025 and 2020-2024 housing values, read October 2026).
- Tomball ISD district release of TEA’s 2025 rating (A, scaled score 92), as cited in the Registry’s The Woodlands fact build; Tomball ISD district boundary description (83 square miles).
- Harris County Tax Office Jurisdiction Tax Rates (Truth-in-Taxation) table, tax year 2025 and 2026 adopted columns (City of Tomball $0.3409400 both years; Tomball ISD TY2025 $1.0629000); City of Tomball FY 2027 Budget and Tax Rate Information; Lone Star College Legal Status page (Tomball ISD within taxing boundaries) and Taxpayer Information page (TY2026 $0.1058).
- Harris Central Appraisal District — About HCAD.
- Neighborhood Registry Tomball fact build, October 2026.