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Company lists · Data refreshed September 2026

Top 25 Professional services firms based in Rockville, United States

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. New York is the largest hub.

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, how directly it supports the match, 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 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.

How to read this list HQ checked on every row Match evidence 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. Evidence rates how directly each company's own description names professional services firms: strong (names it), partial (names part of it), indirect (matched on its full profile rather than the summary shown). Click a count to unlock that company's people.
#CompanyHeadquartersEmployeesContacts
1
TFC Consulting, INCIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 202651-20093

“TFC Consulting, Inc is a licensed CPA and consulting firm in the Washington DC metro area.”

Source: company website · checked Sep 5, 2026
2
Destiny Management Services, LLCIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 2026201-50045

“Destiny Management Services, LLC (DMS) is an experienced provider of business and information solutions, for financial management, information technology, accounting, auditing…”

Source: company website · checked Sep 5, 2026
3
Penan & Scott, P.CStrong evidence
Rockville, MD, United StatesHQ checked Sep 5, 202611-5017

“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: company website · checked Sep 5, 2026
4
Calco Consulting GroupStrong evidence
Rockville, MD, United StatesHQ checked Sep 5, 20261-1016

“A professional business consulting and management company.”

Source: company website · checked Sep 5, 2026
5
Business & Financial Solutions, INCIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 20261-1016

“As strategists, business consultants, accountants, bookkeepers, tax preparers and experts, our job is to assist clients in maximizing profits.”

Source: company website · checked Sep 5, 2026
6
Aronson IS NOW AprioIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 2026201-50014

“Effective January 1st, 2023, Aronson merged with Aprio, a nationally recognized Top 100 business advisory and CPA firm headquartered in Atlanta, GA.”

Source: company website · checked Sep 5, 2026
7
Corporate CFO Services, LLCIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 202611-5010

“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: company website · checked Sep 5, 2026
8
PSA CPAIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 202611-5010

“Taxes?”

Source: company website · checked Sep 5, 2026
9
Clarkson David, CPAIndirect evidence
Rockville, United StatesHQ checked Sep 5, 20261-109

“Clarkson David, CPA is a full service accounting and consulting firm, providing a range of services across a spectrum of industries and interests.”

Source: company website · checked Sep 5, 2026
10
Samek & Flynn, LLCIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 20261-109

“We offer clients creative, competent, and compliant solutions to business and legal issues.”

Source: company website · checked Sep 5, 2026
11
Doyle, Schultz & Bhatia Pllc DSBIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 202611-508

“We bring over 75 years of combined tax & accounting experience to its clients.”

Source: company website · checked Sep 5, 2026
12
MN Blum LLCStrong evidence
Rockville, MD, United StatesHQ checked Sep 5, 202611-508

“Over the years, MN Blum has combined professional expertise with dedication to service.”

Source: company website · checked Sep 5, 2026
13
Saggar & Rosenberg, P.CIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 202651-2007

“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: company website · checked Sep 5, 2026
14
NLH ContractingIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 20261-107

“NLH Contracting is a full service outsourced consulting firm focused on results and solutions to support our clients.”

Source: company website · checked Sep 5, 2026
15
Deva & Associates, P.CIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 202611-506

“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: company website · checked Sep 5, 2026
16
Orisme & AssociatesIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 20261-105

“From 2007, we started by providing small to mid-size businesses with bookkeeping and tax preparation services.”

Source: company website · checked Sep 5, 2026
17
Nbac Corp An Iventure Accounting Group CompanyIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 202611-505

“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: company website · checked Sep 5, 2026
18
CAS & Associates, INCIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 202611-503

“CAS & Associates, Inc is a well-established accounting firm located in Rockville, MD.”

Source: company website · checked Sep 5, 2026
19
Pixces Consulting GroupStrong evidence
Rockville, MD, United StatesHQ checked Sep 5, 202611-503

“Pixces is a highly-skilled, professional services consultancy that creates innovative solutions and game-changing results for our clients.”

Source: company website · checked Sep 5, 2026
20
Finacc PartnersIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 202611-502

“Finacc Partners is a team of Certified Public Accountants, Business Consultants and Financial Advisors.”

Source: company website · checked Sep 5, 2026
21
James Magno, CPA LLCIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 202611-502

“Founded in 2014, James Magno, CPA LLC is a small firm based in Rockville, Maryland.”

Source: company website · checked Sep 5, 2026
22
The LAW Offices Of Eric J. Wexler, CPAIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 20261-102

“Eric J.”

Source: company website · checked Sep 5, 2026
23
Taksey Neff & Associates, LLCIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 202611-501

“Taksey Neff & Associates, LLC provides audit, tax and consulting services to numerous industry sectors, nonprofit organizations and individuals.”

Source: company website · checked Sep 5, 2026
24
KaysuiteIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 20261-101
Source: company website · checked Sep 5, 2026
25
Prescient GroupIndirect evidence
Rockville, MD, United StatesHQ checked Sep 5, 20261-101

“Prescient Group is setting a new precedent in business consulting by consistently delivering on one shared goal, making your business more profitable.”

Source: company website · checked Sep 5, 2026

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
1-10Median size (employees)
New YorkLargest hub · 593 HQs
Contacts with mobile numbers
Sep 5, 2026Data refreshed

Companies by employee count

1-10
23
11-50
16
51-200
3
201-500
2
1,001-5,000
1

Email recency for this list is measured across the whole United States list rather than this city, 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 evidence 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 SmartSearch, 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.
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 an evidence 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

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 has the most professional services firms?

New York leads with 593 headquartered companies, followed by Houston (420) and Atlanta (304).

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.

Ready to reach these companies? Verified emails and direct dials for all 46 professional services firms based in Rockville, United States. Start with a free account, no credit card.

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Related lists

Browse: Companies home · Professional services firms in United States · All United States lists · All Professional services firms lists · New lists

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.

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