Company lists · Data refreshed September 2026
Top 25 Professional services networks based in Los Angeles, United States
RevenueBase identified 51 professional services networks headquartered in Los Angeles, United States as of September 2026 and tracks 3,843 professional contacts across them, including 2,089 with verified work emails. Across the United States, New York is the largest hub for this category (137 companies); Los Angeles has 51.
This list covers professional services networks headquartered in Los Angeles, 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 29, 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.
The 25 largest professional services networks based in Los Angeles, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 1,085 contacts → | ||||
Partial evidence “Forget everything you thought you knew about professional services firms.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 2 | 877 contacts → | ||||
Indirect evidence “HCVT is Southern California’s leading public accounting firm, the largest headquartered in Los Angeles, and the third-largest in the Western U.S.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 3 | 571 contacts → | ||||
Partial evidence “MGO is a global team of financial service professionals serving the full scope of needs shaping our clients’ business and personal goals.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 4 | 487 contacts → | ||||
Indirect evidence “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…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 5 | 261 contacts → | ||||
Indirect evidence “Gursey | Schneider LLP is a premier Los Angeles accounting firm headquartered in Century City, the center of the financial and entertainment community.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 6 | 152 contacts → | ||||
Strong evidence “ProVisors is the largest professional networking organization exclusively for Trusted Advisors with regional chapters across the country.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 7 | 77 contacts → | ||||
Indirect evidence “At RBZ, we've thought long and hard about our people, our clients, our community, and how best to serve them and help them reach their goals going forward.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 8 | 41 contacts → | ||||
Indirect evidence “Fineman West & Company provides a full spectrum of accounting, tax, and business advisory services to a variety of different industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 9 | 28 contacts → | ||||
Indirect evidence “Gettleson, Witzer & O’Connor is a full scope business management practice providing comprehensive tax, accounting and advisory services to individuals – members of the…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 10 | 28 contacts → | ||||
Indirect evidence “Golbar and Associates is a full service public accounting and consulting firm specializing in providing a unique and effective approach to rendering tax, accounting and consulting…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 11 | 26 contacts → | ||||
Indirect evidence “SKMC, LLP (SKMC) is a premiere, Los Angeles-based accounting firm providing high net worth clients with personalized and expert audit, accounting, tax and business advisory…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 12 | 18 contacts → | ||||
Partial evidence “The professionals at Singh and Associates have more than 70 years of combined experience providing tax, accounting, and business consulting services on behalf of: Contractors…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 13 | 15 contacts → | ||||
Indirect evidence “We are more than just partners; we are your biggest fans.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 14 | 13 contacts → | ||||
Indirect evidence “LWA has grown steadily to its present position through organic growth and acquisition of accounting practices.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 15 | 9 contacts → | ||||
Indirect evidence “For more than 55 years the certified public accounting firm of Katz Cassidy has been committed to playing a positive role in the profitability and success of its clients.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 16 | 9 contacts → | ||||
Indirect evidence “NA BUSINESS ADVISORS AND CPAS, INC.(NABA) is a local accounting and consulting firm located in Sherman Oaks, California.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 17 | 7 contacts → | ||||
Indirect evidence “Since our founding in 1981, Kaufman & Kabani has evolved beyond a traditional accounting firm.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 18 | 6 contacts → | ||||
Indirect evidence “Solutions Delivered Since 1980, Resch Polster & Berger LLP has been providing client-focused, innovative yet practical business and legal services for a wide range of industries.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 19 | 5 contacts → | ||||
Indirect evidence “Luxsant is a boutique global accounting and advisory firm specializing in supporting small and medium sized business, ideally with some level of global nexus, with global market…” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 20 | 4 contacts → | ||||
Indirect evidence Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 21 | 4 contacts → | ||||
Indirect evidence “Based in Los Angeles, KS Barlevi is a unique enterprise comprising US CPAs and UK Chartered accountants who work together to help clients build their businesses.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 22 | 4 contacts → | ||||
Indirect evidence “Smaldino, Lutz, Curtis & Associates is one of the leading firms in and throughout the area.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 23 | 4 contacts → | ||||
Indirect evidence “From the old Irish word meaning support, Cultaca Group was formed to focus on the needs of industry clients.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 24 | 3 contacts → | ||||
Partial evidence “We offer a professional, experienced and friendly approach when servicing your accounting and taxation requirements.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
| 25 | 3 contacts → | ||||
Indirect evidence “CPA Buddy is an accounting firm servicing the needs of accounting firms worldwide.” Source: RevenueBase Database · checked Sep 29, 2026Thanks. The Data Team will review it. | |||||
RevenueBase Smart Search
RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: professional services networks. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.
- Strong evidence
- The company's own public description of its business names professional services networks.
- Partial evidence
- Its own public description names part of professional services networks, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name professional services networks. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.
RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.
Showing 25 of 51 professional services networks based in Los Angeles, United States
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Professional services networks based in Los Angeles, United States at a glance
As of Sep 29, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for Los Angeles, so it is reported there. Company counts and contact totals on this page are exact for Los Angeles, over 51 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 professional services networks, 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 Los Angeles, United States whose own description of what they do matches “professional services networks”. 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 professional services networks), 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 professional services networks, and records with no verified work email. Companies headquartered outside Los Angeles 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, 2,089 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 29, 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.
Professional services networks by metro in the United States
- Professional services networks in New York137
- Professional services networks in Chicago63
- Professional services networks in Houston54
- Professional services networks in Atlanta47
- Professional services networks in Miami44
- Professional services networks in Dallas32
- Professional services networks in San Diego31
- Professional services networks in San Francisco29
- Professional services networks in Washington29
- Professional services networks in Irvine28
- Professional services networks in Austin27
- Professional services networks in Tampa25
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 professional services networks, 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 professional services networks are there based in Los Angeles, United States?
RevenueBase identified 51 professional services networks headquartered in Los Angeles, 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?
Manatt, Phelps & Phillips, LLP, headquartered in Los Angeles, tops this list with the largest team on record.
Which city in the United States has the most professional services networks?
New York leads the United States with 137 headquartered companies, followed by Chicago (63) and Houston (54). Los Angeles has 51.
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 2,089 verified decision-maker contacts tracked across these 51 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 29, 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.
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