Company lists · Data refreshed September 2026

Top 25 Allergen management consulting firms based in the United States

RevenueBase identified 241 allergen management consulting firms headquartered in the United States as of September 2026 and tracks 1,734 professional contacts across them, including 367 with verified work emails. Houston is the largest hub.

This list covers allergen management consulting firms headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 27, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 27, 2026 86% judged on-target in blind review
241Companies
1,734Contacts tracked
367Verified emails
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The 25 largest allergen management consulting firms based in the United States

Ranked by team size
Top 25 of 241 allergen management consulting firms based in the United States, ranked by team size, largest first. Data refreshed Sep 27, 2026. RevenueBase Smart Search rates how each company's information relates to allergen management consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Partial evidenceSan Diego, CA, United StatesHQ checked Sep 27, 202611-5074 contacts →

Partial evidence

“Occupational Services, Incorporated is a San Diego-based professional consulting firm providing services in the areas of environmental compliance, occupational health and safety…”

Source: RevenueBase Database · checked Sep 27, 2026
2Partial evidenceHouston, TX, United StatesHQ checked Sep 27, 202611-5046 contacts →

Partial evidence

“International Safety Systems, Inc.(ISS) is a consulting company providing cost effective and high quality industrial hygiene and safety services to 35+ countries from its offices…”

Source: RevenueBase Database · checked Sep 27, 2026
3Partial evidenceRichardson, TX, United StatesHQ checked Sep 27, 202611-5041 contacts →

Partial evidence

“Farmer Environmental Group is a national full service environmental consulting firm providing a wide range of services to industries, municipalities, insurance, real estate…”

Source: RevenueBase Database · checked Sep 27, 2026
4Indirect evidenceFullerton, CA, United StatesHQ checked Sep 27, 202611-5041 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 27, 2026
5Indirect evidenceWillowbrook, IL, United StatesHQ checked Sep 27, 202611-5032 contacts →

Indirect evidence

“Hygieneering, Inc, Corporate Offices are located in suburban Willowbrook, IL with field offices located in the downtown Chicago metro-area and Milwaukee, Wisconsin.”

Source: RevenueBase Database · checked Sep 27, 2026
6Indirect evidenceRound Rock, TX, United StatesHQ checked Sep 27, 2026n/a32 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 27, 2026
7Indirect evidenceChapel Hill, United StatesHQ checked Sep 27, 202611-5030 contacts →

Indirect evidence

“ASA is a healthcare service provider based in Chapel Hill, NC with regional offices in Texas, Tennessee, and Alabama.”

Source: RevenueBase Database · checked Sep 27, 2026
8Partial evidenceLeominster, MA, United StatesHQ checked Sep 27, 202611-5026 contacts →

Partial evidence

“Northeast Allergy provides the full range of allergy, asthma and immunology treatments for both adults and children to help improve our patients’ quality of life.”

Source: RevenueBase Database · checked Sep 27, 2026
9Partial evidenceBoulder, CO, United StatesHQ checked Sep 27, 202611-5024 contacts →

Partial evidence

“The SP Group is a specialized consulting firm dedicated to helping businesses navigate environmental, health, and safety challenges with innovative and compliant solutions.”

Source: RevenueBase Database · checked Sep 27, 2026
10Strong evidencePhoenix, AZ, United StatesHQ checked Sep 27, 202611-5024 contacts →

Strong evidence

“For 30 years, Nextmune has been dedicated to providing exceptional diagnostic tools that make management of pet/horse allergies more reliable, convenient, and effective for doctor…”

Source: RevenueBase Database · checked Sep 27, 2026
11Partial evidenceAtlanta, GA, United StatesHQ checked Sep 27, 202651-20023 contacts →

Partial evidence

“BioTek provides best-in-class allergy testing & customized immunotherapy treatment services for medical offices across the country.”

Source: RevenueBase Database · checked Sep 27, 2026
12Partial evidenceColumbia, MD, United StatesHQ checked Sep 27, 202611-5021 contacts →

Partial evidence

“Certified free from allergens, AllerTrain: food allergy and gluten free training.”

Source: RevenueBase Database · checked Sep 27, 2026
13Partial evidenceSan Francisco, CA, United StatesHQ checked Sep 27, 202611-5018 contacts →

Partial evidence

“1 Personalized Allergy Care Brand.”

Source: RevenueBase Database · checked Sep 27, 2026
14Indirect evidenceLos Angeles, CA, United StatesHQ checked Sep 27, 202611-5018 contacts →

Indirect evidence

“As a leading environmental consultant firm with over 20 years' experience, TRUST Environmental Solutions is dedicated to meeting the specialized needs of the Industrial Hygiene…”

Source: RevenueBase Database · checked Sep 27, 2026
15Indirect evidenceSanta Monica, CA, United StatesHQ checked Sep 27, 202611-5018 contacts →

Indirect evidence

“Mold Inspection Sciences is a mold inspection, mold testing, and asbestos inspection and testing company.”

Source: RevenueBase Database · checked Sep 27, 2026
16Indirect evidenceBrewster, NY, United StatesHQ checked Sep 27, 202611-5016 contacts →

Indirect evidence

“We are proud to announce that 2023 marks the 40th Anniversary of the founding of Adelaide Environmental Health.”

Source: RevenueBase Database · checked Sep 27, 2026
17Indirect evidenceGlendora, CA, United StatesHQ checked Sep 27, 202611-5016 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 27, 2026
18Indirect evidenceSandy, UT, United StatesHQ checked Sep 27, 202611-5015 contacts →

Indirect evidence

“R&R ENVIRONMENTAL provides full spectrum Environmental and Industrial Hygiene services to domestic and international clients of all sizes, types, and sectors.”

Source: RevenueBase Database · checked Sep 27, 2026
19Partial evidenceChandler, AZ, United StatesHQ checked Sep 27, 202651-20015 contacts →

Partial evidence

“Arizona Allergy Associates is a medical practice company based out of Arizona with 5 office locations within the valley.”

Source: RevenueBase Database · checked Sep 27, 2026
20Indirect evidenceRockville, MD, United StatesHQ checked Sep 27, 20261-1013 contacts →

Indirect evidence

Source: RevenueBase Database · checked Sep 27, 2026
21Partial evidenceOnalaska, WI, United StatesHQ checked Sep 27, 202611-5012 contacts →

Partial evidence

“Allergy is a growing problem that impacts more than 20% of the population, yet only 5% of those affected by allergy receive disease-modifying treatment.”

Source: RevenueBase Database · checked Sep 27, 2026
22Indirect evidenceMargate, FL, United StatesHQ checked Sep 27, 20261-1012 contacts →

Indirect evidence

“At Aeris, we specialize in residential and commercial properties needing indoor environmental assessment services.”

Source: RevenueBase Database · checked Sep 27, 2026
23Indirect evidenceCincinnati, OH, United StatesHQ checked Sep 27, 20261-1012 contacts →

Indirect evidence

“EcoPure focuses on improving human health by improving indoor air quality (IAQ).”

Source: RevenueBase Database · checked Sep 27, 2026
24Partial evidenceAlbany, NY, United StatesHQ checked Sep 27, 202611-5010 contacts →

Partial evidence

“Ambient was founded in 2006 on the premise that technical expertise is the cornerstone of our environmental, health and safety consulting firm, but responsiveness and outstanding…”

Source: RevenueBase Database · checked Sep 27, 2026
25Indirect evidenceDenver, CO, United StatesHQ checked Sep 27, 20261-109 contacts →

Indirect evidence

“ETS provides a dynamic team of experts needed to support a wide range of environmental services.”

Source: RevenueBase Database · checked Sep 27, 2026

Showing 25 of 241 allergen management consulting firms based in the United States

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Allergen management consulting firms based in the United States at a glance

As of Sep 27, 2026
21.2%Verified-email coverage
7.2Average contacts per company
1-10Median size (employees)
2.5%Largest-city concentration · Houston
Sep 27, 2026Page data refreshed

Companies by employee count

1-10
150
11-50
75
51-200
12
201-500
2
501-1,000
2

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 241 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among allergen management consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in the United States whose own description of what they do matches “allergen management consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names allergen management consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among allergen management consulting firms, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality
In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking
Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification
Every listed company carries at least one verified work email, 367 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh
This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
Corrections
Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names allergen management consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many allergen management consulting firms are there based in the United States?

RevenueBase identified 241 allergen management consulting firms headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Occupational Services, INC, headquartered in San Diego, tops this list with the largest team on record.

Which city has the most allergen management consulting firms?

Houston leads with 6 headquartered companies, followed by Phoenix (6) and New York (5).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 367 verified decision-maker contacts tracked across these 241 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.