Company lists · Data refreshed September 2026
Top 25 Professional service firms based in the United States
RevenueBase identified 1,955 company matches for professional service firms associated with the United States as of September 2026 and tracks 82,192 professional contacts across them, including 42,791 with verified work emails. New York is the largest hub.
This list covers company matches for professional service firms associated with the United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 20, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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.
The 25 largest professional service firms based in the United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 8,779 contacts → | ||||
Exact match “Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 2 | 6,369 contacts → | ||||
Exact match “CBIZ, Inc.(NYSE: CBZ) is a leading professional services advisor to middle-market businesses nationwide.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 3 | 4,199 contacts → | ||||
Exact match “EisnerAmper, one of the largest business consulting firms in the world, is comprised of EisnerAmper LLP, a licensed independent CPA firm that provides client attest services; and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 4 | 3,047 contacts → | ||||
Exact match “Always advancing.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 5 | 2,996 contacts → | ||||
Exact match “Citrin Cooperman is one of the nation’s largest and fastest-growing professional services firms.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 6 | 2,102 contacts → | ||||
Exact match “Carr, Riggs & Ingram (CRI) is a Top 25 nationally-ranked accounting and advisory firm driven by relationships to cultivate growth.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 7 | 2,035 contacts → | ||||
Exact match “UHY is one of the nation’s largest professional services firms providing audit, tax, consulting and advisory services to clients primarily in the dynamic middle market.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 8 | 1,688 contacts → | ||||
Exact match “Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 9 | 1,323 contacts → | ||||
Exact match “Rehmann is a professional advisory firm that provides accounting and assurance, business solutions and outsourcing, specialized consulting, and wealth management services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 10 | 1,056 contacts → | ||||
Exact match “RubinBrown provides unmatched service to closely held and publicly traded companies in specialized market sectors as well as non-profit and public sector organizations.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 11 | 844 contacts → | ||||
Exact match “Warren Averett CPAs and Advisors is a top-tier accounting and advisory firm based in the Southeastern U.S, proudly ranking among the nation's top 50 firms.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 12 | 634 contacts → | ||||
Exact match “At Blue & Co.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 13 | 496 contacts → | ||||
Exact match “Providing Professional Business Advisory and Consulting Services including tax, accounting and IT services.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 14 | 487 contacts → | ||||
Exact match “SingerLewak has a 60-year history of serving clients as one of the leading West Coast based public accounting firms; SingerLewak understands the needs of business owners and…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 15 | 467 contacts → | ||||
Exact match “Prager Metis CPAs is an independent, full service, public accounting and consulting firm.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 16 | 413 contacts → | ||||
Exact match “Smith + Howard is a tax, accounting, advisory, and consulting firm headquartered in Atlanta, with a global presence.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 17 | 393 contacts → | ||||
Exact match “PBMares is a Certified Public Accounting and consulting firm focused on serving the audit, tax, accounting, and consulting needs of companies and individuals.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 18 | 392 contacts → | ||||
Exact match “Since 1953, REDW Advisors & CPAs has been fully committed to the success of our clients.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 19 | 376 contacts → | ||||
Exact match “We Are All About You That is why we take a holistic approach to assisting clients with growing, managing, and protecting their hard work.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 20 | 361 contacts → | ||||
Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 21 | 354 contacts → | ||||
Exact match “Stevens & Lee is the cornerstone of The Stevens & Lee Companies, a platform of affiliated professional service firms which provides a full range of legal, investment banking…” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 22 | 347 contacts → | ||||
Exact match “Clark Nuber is an award-winning Certified Public Accounting firm located in the Seattle Metro Area.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 23 | 323 contacts → | ||||
Exact match “Listed below are the two entities that make up SVA, a highly diversified, independent professional services firm.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 24 | 314 contacts → | ||||
Exact match “Adams Brown, LLC, a leading CPA and advisory firm, has delivered value-added accounting and advisory services to businesses and their owners since 1945.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
| 25 | 300 contacts → | ||||
Exact match “Service is the sole purpose of our existence.” -James “Jim” Moore We’ve lived by these words ever since our firm was founded in 1964.” Recorded in the RevenueBase company graph · Sep 20, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “professional service firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 1,955 professional service firms based in the United States
See the full list, filter by size, metro and specialty, and access 42,791 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Professional service firms based in the United States at a glance
As of Sep 20, 2026Companies by employee count
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 1,955 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with the United States whose business descriptions match “professional service firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- 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 displayed company carries at least one verified work email. RevenueBase tracks 42,791 professional contacts with verified work emails across the full matched dataset. 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 20, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Professional service firms by metro
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “professional service firms”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many professional service firms are there based in the United States?
RevenueBase identified 1,955 company matches for professional service firms associated with the United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Protiviti tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city has the most professional service firms?
New York leads with 68 company records, followed by Atlanta (40) and Houston (36).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 42,791 professional contacts with verified work emails tracked across these 1,955 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.
Ready to reach these companies? Verified emails and direct dials for all 1,955 professional service firms based in the United States. Start with a free account, no credit card.
Download this list →Related lists
Professional service firms by geography
- Professional service firms based in Belo Horizonte, Brazil
- Professional service firms based in Curitiba, Brazil
- Professional service firms based in Porto Alegre, Brazil
- Professional service firms based in Recife, Brazil
- Professional service firms based in Rio De Janeiro, Brazil
- Professional service firms based in Sao Paulo, Brazil
- Professional service firms based in Lyon, France
- Professional service firms based in Paris, France
- Professional service firms based in Toulouse, France
- Professional service firms based in Berlin, Germany
- Professional service firms based in Hamburg, Germany
- Professional service firms based in Ahmedabad, India
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 SmartSearch, 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.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Professional service firms based in Belo Horizonte, Brazil
- Professional service firms based in Curitiba, Brazil
- Professional service firms based in Porto Alegre, Brazil
- Professional service firms based in Recife, Brazil
- Professional service firms based in Rio De Janeiro, Brazil
- Professional service firms based in Sao Paulo, Brazil
Company intelligence · public preview
Top 25 professional service firms based in the United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 1,955 matching company records for professional service firms based in the United States, with 82,192 tracked contacts and 42,791 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 professional service firms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Protivitiprotiviti.comHQ: Menlo Park, CA, United StatesReported employees: 5,001-10,000 | Menlo Park, CA, United States | 5,001-10,000 | Exact match | 8,779 contacts → |
“Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  CBIZcbiz.comHQ: Independence, OH, United StatesReported employees: 10001+ | Independence, OH, United States | 10001+ | Exact match | 6,369 contacts → |
“CBIZ, Inc.(NYSE: CBZ) is a leading professional services advisor to middle-market businesses nationwide.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  Eisnerampereisneramper.comHQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 4,199 contacts → |
“EisnerAmper, one of the largest business consulting firms in the world, is comprised of EisnerAmper LLP, a licensed independent CPA firm that provides client attest services; and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Wipfliwipfli.comHQ: Milwaukee, WI, United StatesReported employees: 1,001-5,000 | Milwaukee, WI, United States | 1,001-5,000 | Exact match | 3,047 contacts → |
“Always advancing.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Citrin Coopermancitrincooperman.comHQ: New York, United StatesReported employees: 1,001-5,000 | New York, United States | 1,001-5,000 | Exact match | 2,996 contacts → |
“Citrin Cooperman is one of the nation’s largest and fastest-growing professional services firms.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Carr, Riggs & Ingramcriadv.comHQ: Enterprise, AL, United StatesReported employees: 1,001-5,000 | Enterprise, AL, United States | 1,001-5,000 | Exact match | 2,102 contacts → |
“Carr, Riggs & Ingram (CRI) is a Top 25 nationally-ranked accounting and advisory firm driven by relationships to cultivate growth.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Uhy-Usuhy-us.comHQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 2,035 contacts → |
“UHY is one of the nation’s largest professional services firms providing audit, tax, consulting and advisory services to clients primarily in the dynamic middle market.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Sikichsikich.comHQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 1,688 contacts → |
“Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Rehmannrehmann.comHQ: Troy, MI, United StatesReported employees: 501-1,000 | Troy, MI, United States | 501-1,000 | Exact match | 1,323 contacts → |
“Rehmann is a professional advisory firm that provides accounting and assurance, business solutions and outsourcing, specialized consulting, and wealth management services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Rubinbrown LLPrubinbrown.comHQ: St. Louis, MO, United StatesReported employees: 501-1,000 | St. Louis, MO, United States | 501-1,000 | Exact match | 1,056 contacts → |
“RubinBrown provides unmatched service to closely held and publicly traded companies in specialized market sectors as well as non-profit and public sector organizations.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Warren Averettwarrenaverett.comHQ: Birmingham, AL, United StatesReported employees: 501-1,000 | Birmingham, AL, United States | 501-1,000 | Exact match | 844 contacts → |
“Warren Averett CPAs and Advisors is a top-tier accounting and advisory firm based in the Southeastern U.S, proudly ranking among the nation's top 50 firms.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Blue & Co., LLCblueandco.comHQ: Carmel, IN, United StatesReported employees: 201-500 | Carmel, IN, United States | 201-500 | Exact match | 634 contacts → |
“At Blue & Co.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Brown Edwardsbecpas.comHQ: Roanoke, VA, United StatesReported employees: 201-500 | Roanoke, VA, United States | 201-500 | Exact match | 496 contacts → |
“Providing Professional Business Advisory and Consulting Services including tax, accounting and IT services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Singerlewak LLPsingerlewak.comHQ: Los Angeles, CA, United StatesReported employees: 201-500 | Los Angeles, CA, United States | 201-500 | Exact match | 487 contacts → |
“SingerLewak has a 60-year history of serving clients as one of the leading West Coast based public accounting firms; SingerLewak understands the needs of business owners and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Prager Metis Cpaspragermetis.comHQ: New York, United StatesReported employees: 201-500 | New York, United States | 201-500 | Exact match | 467 contacts → |
“Prager Metis CPAs is an independent, full service, public accounting and consulting firm.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Smith Howardsmith-howard.comHQ: Atlanta, GA, United StatesReported employees: 501-1,000 | Atlanta, GA, United States | 501-1,000 | Exact match | 413 contacts → |
“Smith + Howard is a tax, accounting, advisory, and consulting firm headquartered in Atlanta, with a global presence.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Pbmares, LLPpbmares.comHQ: Newport News, VA, United StatesReported employees: 201-500 | Newport News, VA, United States | 201-500 | Exact match | 393 contacts → |
“PBMares is a Certified Public Accounting and consulting firm focused on serving the audit, tax, accounting, and consulting needs of companies and individuals.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Redw Advisors & Cpasredw.comHQ: Albuquerque, NM, United StatesReported employees: 201-500 | Albuquerque, NM, United States | 201-500 | Exact match | 392 contacts → |
“Since 1953, REDW Advisors & CPAs has been fully committed to the success of our clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  YHB Cpas & Consultantsyhbcpa.comHQ: Winchester, VA, United StatesReported employees: 201-500 | Winchester, VA, United States | 201-500 | Exact match | 376 contacts → |
“We Are All About You That is why we take a holistic approach to assisting clients with growing, managing, and protecting their hard work.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Berkowitz Pollack Brant Advisors Cpasbpbcpa.comHQ: Miami, FL, United StatesReported employees: 201-500 | Miami, FL, United States | 201-500 | Exact match | 361 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | Stevens & LEEstevenslee.com HQ: Reading, PA, United StatesReported employees: 201-500 | Reading, PA, United States | 201-500 | Exact match | 354 contacts → |
“Stevens & Lee is the cornerstone of The Stevens & Lee Companies, a platform of affiliated professional service firms which provides a full range of legal, investment banking…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Clark Nuber PSclarknuber.comHQ: Bellevue, WA, United StatesReported employees: 201-500 | Bellevue, WA, United States | 201-500 | Exact match | 347 contacts → |
“Clark Nuber is an award-winning Certified Public Accounting firm located in the Seattle Metro Area.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: Madison, WI, United StatesReported employees: 201-500 | Madison, WI, United States | 201-500 | Exact match | 323 contacts → |
“Listed below are the two entities that make up SVA, a highly diversified, independent professional services firm.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Adams Brownadamsbrowncpa.comHQ: Wichita, KS, United StatesReported employees: 201-500 | Wichita, KS, United States | 201-500 | Exact match | 314 contacts → |
“Adams Brown, LLC, a leading CPA and advisory firm, has delivered value-added accounting and advisory services to businesses and their owners since 1945.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  James Moore & COjmco.comHQ: Gainesville, FL, United StatesReported employees: 201-500 | Gainesville, FL, United States | 201-500 | Exact match | 300 contacts → |
“Service is the sole purpose of our existence.” -James “Jim” Moore We’ve lived by these words ever since our firm was founded in 1964.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,955 company matches
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Professional service firms: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,948 records in the displayed employee bands.
7 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 1,955 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Professional service firms by metro
Questions about this company list
What does Exact match mean for professional service firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many professional service firms did RevenueBase find based in the United States?
The saved snapshot records 1,955 matching company records, 82,192 tracked contacts and 42,791 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Professional service firms by geography
- Professional service firms based in Belo Horizonte, Brazil
- Professional service firms based in Curitiba, Brazil
- Professional service firms based in Porto Alegre, Brazil
- Professional service firms based in Recife, Brazil
- Professional service firms based in Rio De Janeiro, Brazil
- Professional service firms based in Sao Paulo, Brazil
- Professional service firms based in Lyon, France
- Professional service firms based in Paris, France
- Professional service firms based in Toulouse, France
- Professional service firms based in Berlin, Germany
- Professional service firms based in Hamburg, Germany
- Professional service firms based in Ahmedabad, India
Cite this list
RevenueBase Data Team. Top 25 professional service firms based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/professional-service-firms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Professional service firms based in Belo Horizonte, Brazil
- Professional service firms based in Curitiba, Brazil
- Professional service firms based in Porto Alegre, Brazil
- Professional service firms based in Recife, Brazil
- Professional service firms based in Rio De Janeiro, Brazil
- Professional service firms based in Sao Paulo, Brazil
Company intelligence · public preview
Top 25 professional service firms based in the United States
RevenueBase records 1,955 matching company records for professional service firms based in the United States, with 82,192 tracked contacts and 42,791 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 20, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 professional service firms based in the United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Protivitiprotiviti.com HQ: Menlo Park, CA, United StatesReported employees: 5,001-10,000 | Menlo Park, CA, United States | 5,001-10,000 | Exact match | 8,779 contacts → |
“Protiviti is a global consulting firm that delivers deep expertise, objective insights, a tailored approach and unparalleled collaboration to help leaders confidently face the…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | CBIZcbiz.com HQ: Independence, OH, United StatesReported employees: 10001+ | Independence, OH, United States | 10001+ | Exact match | 6,369 contacts → |
“CBIZ, Inc.(NYSE: CBZ) is a leading professional services advisor to middle-market businesses nationwide.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | Eisnerampereisneramper.com HQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 4,199 contacts → |
“EisnerAmper, one of the largest business consulting firms in the world, is comprised of EisnerAmper LLP, a licensed independent CPA firm that provides client attest services; and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Wipfliwipfli.com HQ: Milwaukee, WI, United StatesReported employees: 1,001-5,000 | Milwaukee, WI, United States | 1,001-5,000 | Exact match | 3,047 contacts → |
“Always advancing.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Citrin Coopermancitrincooperman.com HQ: New York, United StatesReported employees: 1,001-5,000 | New York, United States | 1,001-5,000 | Exact match | 2,996 contacts → |
“Citrin Cooperman is one of the nation’s largest and fastest-growing professional services firms.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Carr, Riggs & Ingramcriadv.com HQ: Enterprise, AL, United StatesReported employees: 1,001-5,000 | Enterprise, AL, United States | 1,001-5,000 | Exact match | 2,102 contacts → |
“Carr, Riggs & Ingram (CRI) is a Top 25 nationally-ranked accounting and advisory firm driven by relationships to cultivate growth.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Uhy-Usuhy-us.com HQ: New York, NY, United StatesReported employees: 1,001-5,000 | New York, NY, United States | 1,001-5,000 | Exact match | 2,035 contacts → |
“UHY is one of the nation’s largest professional services firms providing audit, tax, consulting and advisory services to clients primarily in the dynamic middle market.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Sikichsikich.com HQ: Chicago, IL, United StatesReported employees: 1,001-5,000 | Chicago, IL, United States | 1,001-5,000 | Exact match | 1,688 contacts → |
“Sikich offers the public and private sectors a diverse platform of professional services across consulting, technology, and compliance.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Rehmannrehmann.com HQ: Troy, MI, United StatesReported employees: 501-1,000 | Troy, MI, United States | 501-1,000 | Exact match | 1,323 contacts → |
“Rehmann is a professional advisory firm that provides accounting and assurance, business solutions and outsourcing, specialized consulting, and wealth management services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Rubinbrown LLPrubinbrown.com HQ: St. Louis, MO, United StatesReported employees: 501-1,000 | St. Louis, MO, United States | 501-1,000 | Exact match | 1,056 contacts → |
“RubinBrown provides unmatched service to closely held and publicly traded companies in specialized market sectors as well as non-profit and public sector organizations.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Warren Averettwarrenaverett.com HQ: Birmingham, AL, United StatesReported employees: 501-1,000 | Birmingham, AL, United States | 501-1,000 | Exact match | 844 contacts → |
“Warren Averett CPAs and Advisors is a top-tier accounting and advisory firm based in the Southeastern U.S, proudly ranking among the nation's top 50 firms.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Blue & Co., LLCblueandco.com HQ: Carmel, IN, United StatesReported employees: 201-500 | Carmel, IN, United States | 201-500 | Exact match | 634 contacts → |
“At Blue & Co.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Brown Edwardsbecpas.com HQ: Roanoke, VA, United StatesReported employees: 201-500 | Roanoke, VA, United States | 201-500 | Exact match | 496 contacts → |
“Providing Professional Business Advisory and Consulting Services including tax, accounting and IT services.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Singerlewak LLPsingerlewak.com HQ: Los Angeles, CA, United StatesReported employees: 201-500 | Los Angeles, CA, United States | 201-500 | Exact match | 487 contacts → |
“SingerLewak has a 60-year history of serving clients as one of the leading West Coast based public accounting firms; SingerLewak understands the needs of business owners and…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Prager Metis Cpaspragermetis.com HQ: New York, United StatesReported employees: 201-500 | New York, United States | 201-500 | Exact match | 467 contacts → |
“Prager Metis CPAs is an independent, full service, public accounting and consulting firm.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Smith Howardsmith-howard.com HQ: Atlanta, GA, United StatesReported employees: 501-1,000 | Atlanta, GA, United States | 501-1,000 | Exact match | 413 contacts → |
“Smith + Howard is a tax, accounting, advisory, and consulting firm headquartered in Atlanta, with a global presence.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Pbmares, LLPpbmares.com HQ: Newport News, VA, United StatesReported employees: 201-500 | Newport News, VA, United States | 201-500 | Exact match | 393 contacts → |
“PBMares is a Certified Public Accounting and consulting firm focused on serving the audit, tax, accounting, and consulting needs of companies and individuals.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Redw Advisors & Cpasredw.com HQ: Albuquerque, NM, United StatesReported employees: 201-500 | Albuquerque, NM, United States | 201-500 | Exact match | 392 contacts → |
“Since 1953, REDW Advisors & CPAs has been fully committed to the success of our clients.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | YHB Cpas & Consultantsyhbcpa.com HQ: Winchester, VA, United StatesReported employees: 201-500 | Winchester, VA, United States | 201-500 | Exact match | 376 contacts → |
“We Are All About You That is why we take a holistic approach to assisting clients with growing, managing, and protecting their hard work.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Berkowitz Pollack Brant Advisors Cpasbpbcpa.com HQ: Miami, FL, United StatesReported employees: 201-500 | Miami, FL, United States | 201-500 | Exact match | 361 contacts → |
No recorded description excerpt is available for this public record. | |||||
| 21 | Stevens & LEEstevenslee.com HQ: Reading, PA, United StatesReported employees: 201-500 | Reading, PA, United States | 201-500 | Exact match | 354 contacts → |
“Stevens & Lee is the cornerstone of The Stevens & Lee Companies, a platform of affiliated professional service firms which provides a full range of legal, investment banking…” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Clark Nuber PSclarknuber.com HQ: Bellevue, WA, United StatesReported employees: 201-500 | Bellevue, WA, United States | 201-500 | Exact match | 347 contacts → |
“Clark Nuber is an award-winning Certified Public Accounting firm located in the Seattle Metro Area.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | HQ: Madison, WI, United StatesReported employees: 201-500 | Madison, WI, United States | 201-500 | Exact match | 323 contacts → |
“Listed below are the two entities that make up SVA, a highly diversified, independent professional services firm.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Adams Brownadamsbrowncpa.com HQ: Wichita, KS, United StatesReported employees: 201-500 | Wichita, KS, United States | 201-500 | Exact match | 314 contacts → |
“Adams Brown, LLC, a leading CPA and advisory firm, has delivered value-added accounting and advisory services to businesses and their owners since 1945.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | James Moore & COjmco.com HQ: Gainesville, FL, United StatesReported employees: 201-500 | Gainesville, FL, United States | 201-500 | Exact match | 300 contacts → |
“Service is the sole purpose of our existence.” -James “Jim” Moore We’ve lived by these words ever since our firm was founded in 1964.” Recorded description excerpt · September 20, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 1,955 company matches
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Professional service firms: dataset insights
September 20, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
1,948 records in the displayed employee bands.
7 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
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 1,955 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 20, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Professional service firms by metro
Questions about this company list
What does Exact match mean for professional service firms?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many professional service firms did RevenueBase find based in the United States?
The saved snapshot records 1,955 matching company records, 82,192 tracked contacts and 42,791 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 20, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Professional service firms by geography
- Professional service firms based in Belo Horizonte, Brazil
- Professional service firms based in Curitiba, Brazil
- Professional service firms based in Porto Alegre, Brazil
- Professional service firms based in Recife, Brazil
- Professional service firms based in Rio De Janeiro, Brazil
- Professional service firms based in Sao Paulo, Brazil
- Professional service firms based in Lyon, France
- Professional service firms based in Paris, France
- Professional service firms based in Toulouse, France
- Professional service firms based in Berlin, Germany
- Professional service firms based in Hamburg, Germany
- Professional service firms based in Ahmedabad, India
Cite this list
RevenueBase Data Team. Top 25 professional service firms based in the United States. Snapshot: September 20, 2026. https://revenuebase.ai/companies/professional-service-firms/united-states.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
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- Lists A-Z
- New lists
- Professional service firms based in Belo Horizonte, Brazil
- Professional service firms based in Curitiba, Brazil
- Professional service firms based in Porto Alegre, Brazil
- Professional service firms based in Recife, Brazil
- Professional service firms based in Rio De Janeiro, Brazil
- Professional service firms based in Sao Paulo, Brazil