Company lists · Data refreshed September 2026

Top 25 Professional services firms based in Rockville, United States

Name: Professional services firms based in Rockville, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 5, 2026 46 companies tracked

RevenueBase identified 46 professional services firms headquartered in Rockville, United States as of September 2026 and tracks 486 professional contacts across them, including 146 with verified work emails. Across the United States, New York is the largest hub for this category (593 companies); Rockville has 46.

This list covers professional services firms headquartered in Rockville, 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 5, 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 5, 2026 86% judged on-target in blind review

46Companies

486Contacts tracked

146Verified emails

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The 25 largest professional services firms based in Rockville, United States

Ranked by team size

Top 25 of 46 professional services firms based in Rockville, United States, ranked by team size, largest first. Data refreshed Sep 5, 2026. RevenueBase Smart Search rates how each company's information relates to professional services 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.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	TFC Consulting, INC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	51-200	93 contacts →
	Indirect evidence “TFC Consulting, Inc is a licensed CPA and consulting firm in the Washington DC metro area.” Source: RevenueBase Database · checked Sep 5, 2026
2	Destiny Management Services, LLC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	201-500	45 contacts →
	Indirect evidence “Destiny Management Services, LLC (DMS) is an experienced provider of business and information solutions, for financial management, information technology, accounting, auditing…” Source: RevenueBase Database · checked Sep 5, 2026
3	Penan & Scott, P.C	Strong evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	11-50	17 contacts →
	Strong evidence “The cornerstone of Penan & Scott, P.C.'s success in providing professional services emanates from our commitment to the entrepreneurial approach to business, and our ability to…” Source: RevenueBase Database · checked Sep 5, 2026
4	Calco Consulting Group	Strong evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	1-10	16 contacts →
	Strong evidence “A professional business consulting and management company.” Source: RevenueBase Database · checked Sep 5, 2026
5	Business & Financial Solutions, INC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	1-10	16 contacts →
	Indirect evidence “As strategists, business consultants, accountants, bookkeepers, tax preparers and experts, our job is to assist clients in maximizing profits.” Source: RevenueBase Database · checked Sep 5, 2026
6	Aronson IS NOW Aprio	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	201-500	14 contacts →
	Indirect evidence “Effective January 1st, 2023, Aronson merged with Aprio, a nationally recognized Top 100 business advisory and CPA firm headquartered in Atlanta, GA.” Source: RevenueBase Database · checked Sep 5, 2026
7	Corporate CFO Services, LLC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	11-50	10 contacts →
	Indirect evidence “Corporate CFO Services is one of the premier providers of Accounting and Business Advisory Services within the Mid-Atlantic region, whose primary goal is to provide your company…” Source: RevenueBase Database · checked Sep 5, 2026
8	PSA CPA	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	11-50	10 contacts →
	Indirect evidence “Taxes?” Source: RevenueBase Database · checked Sep 5, 2026
9	Clarkson David, CPA	Indirect evidence	Rockville, United StatesHQ checked Sep 5, 2026	1-10	9 contacts →
	Indirect evidence “Clarkson David, CPA is a full service accounting and consulting firm, providing a range of services across a spectrum of industries and interests.” Source: RevenueBase Database · checked Sep 5, 2026
10	Samek & Flynn, LLC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	1-10	9 contacts →
	Indirect evidence “We offer clients creative, competent, and compliant solutions to business and legal issues.” Source: RevenueBase Database · checked Sep 5, 2026
11	Doyle, Schultz & Bhatia Pllc DSB	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	11-50	8 contacts →
	Indirect evidence “We bring over 75 years of combined tax & accounting experience to its clients.” Source: RevenueBase Database · checked Sep 5, 2026
12	MN Blum LLC	Strong evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	11-50	8 contacts →
	Strong evidence “Over the years, MN Blum has combined professional expertise with dedication to service.” Source: RevenueBase Database · checked Sep 5, 2026
13	Saggar & Rosenberg, P.C	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	51-200	7 contacts →
	Indirect evidence “Saggar & Rosenberg, P.C, is a growing CPA and Management Consulting firm that serves a broad base of private sector and non-profit industries to include: government contractors…” Source: RevenueBase Database · checked Sep 5, 2026
14	NLH Contracting	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	1-10	7 contacts →
	Indirect evidence “NLH Contracting is a full service outsourced consulting firm focused on results and solutions to support our clients.” Source: RevenueBase Database · checked Sep 5, 2026
15	Deva & Associates, P.C	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	11-50	6 contacts →
	Indirect evidence “Deva & Associates, P.C, a small business, has built a strong reputation for providing high quality, timely and cost-effective services, with a proven track record of superior…” Source: RevenueBase Database · checked Sep 5, 2026
16	Orisme & Associates	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	1-10	5 contacts →
	Indirect evidence “From 2007, we started by providing small to mid-size businesses with bookkeeping and tax preparation services.” Source: RevenueBase Database · checked Sep 5, 2026
17	Nbac Corp An Iventure Accounting Group Company	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	11-50	5 contacts →
	Indirect evidence “NBAC Corp is a unique international business advisory and boutique consulting firm that specializes in cross-border business and personal finance services for small-to-mid-size…” Source: RevenueBase Database · checked Sep 5, 2026
18	CAS & Associates, INC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	11-50	3 contacts →
	Indirect evidence “CAS & Associates, Inc is a well-established accounting firm located in Rockville, MD.” Source: RevenueBase Database · checked Sep 5, 2026
19	Pixces Consulting Group	Strong evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	11-50	3 contacts →
	Strong evidence “Pixces is a highly-skilled, professional services consultancy that creates innovative solutions and game-changing results for our clients.” Source: RevenueBase Database · checked Sep 5, 2026
20	Finacc Partners	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	11-50	2 contacts →
	Indirect evidence “Finacc Partners is a team of Certified Public Accountants, Business Consultants and Financial Advisors.” Source: RevenueBase Database · checked Sep 5, 2026
21	James Magno, CPA LLC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	11-50	2 contacts →
	Indirect evidence “Founded in 2014, James Magno, CPA LLC is a small firm based in Rockville, Maryland.” Source: RevenueBase Database · checked Sep 5, 2026
22	The LAW Offices Of Eric J. Wexler, CPA	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	1-10	2 contacts →
	Indirect evidence “Eric J.” Source: RevenueBase Database · checked Sep 5, 2026
23	Taksey Neff & Associates, LLC	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	11-50	1 contacts →
	Indirect evidence “Taksey Neff & Associates, LLC provides audit, tax and consulting services to numerous industry sectors, nonprofit organizations and individuals.” Source: RevenueBase Database · checked Sep 5, 2026
24	Kaysuite	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	1-10	1 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 5, 2026
25	Prescient Group	Indirect evidence	Rockville, MD, United StatesHQ checked Sep 5, 2026	1-10	1 contacts →
	Indirect evidence “Prescient Group is setting a new precedent in business consulting by consistently delivering on one shared goal, making your business more profitable.” Source: RevenueBase Database · checked Sep 5, 2026

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 firms. 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 firms.
Partial evidence: Its own public description names part of professional services firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name professional services firms. 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 46 professional services firms based in Rockville, United States

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Professional services firms based in Rockville, United States at a glance

As of Sep 5, 2026

30.0%Verified-email coverage

10.6Average contacts per company

1-10Median size (employees)

Sep 5, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

Email recency for this list is measured across the whole United States list rather than for Rockville, so it is reported there. Company counts and contact totals on this page are exact for Rockville, over 46 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 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 Rockville, United States whose own description of what they do matches “professional services 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 professional services 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 professional services firms, and records with no verified work email. Companies headquartered outside Rockville 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, 146 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 5, 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 firms by metro in the United States

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 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 professional services firms are there based in Rockville, United States?

RevenueBase identified 46 professional services firms headquartered in Rockville, 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?

TFC Consulting, INC, headquartered in Rockville, tops this list with the largest team on record.

Which city in the United States has the most professional services firms?

New York leads the United States with 593 headquartered companies, followed by Houston (420) and Atlanta (304). Rockville has 46.

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 146 verified decision-maker contacts tracked across these 46 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 5, 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.