Company lists · Data refreshed September 2026

Top 25 D and i consulting firms based in Columbia, United States

RevenueBase identified 57 d and i consulting firms headquartered in Columbia, United States as of September 2026 and tracks 5,456 professional contacts across them, including 2,955 with verified work emails. Across the United States, New York is the largest hub for this category (1,070 companies); Columbia has 57.

This list covers d and i consulting firms headquartered in Columbia, 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 24, 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 24, 2026 86% judged on-target in blind review
57Companies
5,456Contacts tracked
2,955Verified emails
Explore this list → Free signup · no credit card · 500 free credits

The 25 largest d and i consulting firms based in Columbia, United States

Ranked by team size
Top 25 of 57 d and i consulting firms based in Columbia, United States, ranked by team size, largest first. Data refreshed Sep 24, 2026. RevenueBase Smart Search rates how each company's information relates to d and i consulting firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#CompanyRevenueBase Smart SearchHeadquartersEmployeesContacts
1Indirect evidenceColumbia, MD, United StatesHQ checked Sep 24, 202610001+4,731 contacts →

Indirect evidence

“Merkle, a dentsu company, powers the experience economy.”

Source: RevenueBase Database · checked Sep 24, 2026
2Partial evidenceColumbia, SC, United StatesHQ checked Sep 24, 202651-200213 contacts →

Partial evidence

“Pinnacle Consulting LLC was founded in 2003 with a vision of designing and implementing comprehensive IT solutions tailored to it’s customers needs.”

Source: RevenueBase Database · checked Sep 24, 2026
3Partial evidenceColumbia, SC, United StatesHQ checked Sep 24, 202651-20072 contacts →

Partial evidence

“For over 25 years, Bauknight Pietras & Stormer, PA, has been one of the Southeast’s largest and most trusted accounting and consulting firms, using our extensive experience in…”

Source: RevenueBase Database · checked Sep 24, 2026
4Indirect evidenceColumbia, MD, United StatesHQ checked Sep 24, 202651-20058 contacts →

Indirect evidence

“JASINT is a Maryland based Limited Liability Company that began its business operations and staffing in July 2007.”

Source: RevenueBase Database · checked Sep 24, 2026
5Indirect evidenceColumbia, MD, United StatesHQ checked Sep 24, 202611-5047 contacts →

Indirect evidence

“Mokxa helps Enterprises, Governments, and Startups transform every IT decision into an engine of excellence, delivering measurable impact.”

Source: RevenueBase Database · checked Sep 24, 2026
6Indirect evidenceColumbia, MD, United StatesHQ checked Sep 24, 202651-20034 contacts →

Indirect evidence

“NetCraftsmen, was acquired by BlueAlly in March 2022.”

Source: RevenueBase Database · checked Sep 24, 2026
7Partial evidenceColumbia, MD, United StatesHQ checked Sep 24, 202611-5030 contacts →

Partial evidence

“With headquarters in Maryland, Cymertek [/'sī-mer-tek/] Corporation provides superior consulting services for the implementation of high quality information systems.”

Source: RevenueBase Database · checked Sep 24, 2026
8Indirect evidenceColumbia, United StatesHQ checked Sep 24, 202651-20016 contacts →

Indirect evidence

“Victory Global Solutions is dedicated to accelerating your organization’s digital transformation, helping you enhance IT infrastructure, streamline operations, and fortify overall…”

Source: RevenueBase Database · checked Sep 24, 2026
9Indirect evidenceColumbia, MD, United StatesHQ checked Sep 24, 202611-5015 contacts →

Indirect evidence

“In this rapidly evolving digital age, Pumex Computing helps businesses develop customized, process-driven, and end-to-end software solutions that help them stay ahead of the curve…”

Source: RevenueBase Database · checked Sep 24, 2026
10Indirect evidenceColumbia, MD, United StatesHQ checked Sep 24, 202611-5014 contacts →

Indirect evidence

“Themis Insight provides human focused insight to National Security clients.”

Source: RevenueBase Database · checked Sep 24, 2026
11Partial evidenceColumbia, MD, United StatesHQ checked Sep 24, 202611-5013 contacts →

Partial evidence

“TIER 1 CONSULTING GROUP provides the insight, expertise, commitment, and experience to help our customers to enable and realize effective change.”

Source: RevenueBase Database · checked Sep 24, 2026
12Partial evidenceColumbia, MD, United StatesHQ checked Sep 24, 202611-5012 contacts →

Partial evidence

“GCOM Information Technology Inc.(GIT) is a USA-based IT Management Consulting, Software Development and Services firm.”

Source: RevenueBase Database · checked Sep 24, 2026
13Partial evidenceColumbia, MD, United StatesHQ checked Sep 24, 202611-5010 contacts →

Partial evidence

“Welcome to Tagma Solutions, a premier provider of tailored IT services and consulting solutions crafted to meet the evolving needs of modern businesses.”

Source: RevenueBase Database · checked Sep 24, 2026
14Indirect evidenceColumbia, MD, United StatesHQ checked Sep 24, 20261-108 contacts →

Indirect evidence

“We provide transformative technology and strategic leadership advisory solutions in mission-critical environments.”

Source: RevenueBase Database · checked Sep 24, 2026
15Indirect evidenceColumbia, SC, United StatesHQ checked Sep 24, 202611-505 contacts →

Indirect evidence

“Our clients are able to be more efficient and more profitable by harnessing the power of technology – partnered with JoyeGroup.”

Source: RevenueBase Database · checked Sep 24, 2026
16Partial evidenceColumbia, MD, United StatesHQ checked Sep 24, 202611-505 contacts →

Partial evidence

“Ardra Tech Solutions is a leading application development, services and consulting company based in Columbia, Maryland USA that designs and builds cutting edge digital…”

Source: RevenueBase Database · checked Sep 24, 2026
17Indirect evidenceColumbia, MD, United StatesHQ checked Sep 24, 20261-104 contacts →

Indirect evidence

“With over 45 years of experience at the Defense Contract Audit Agency, we provide our clients not only the technical skills for compliance, but also the insight into how the…”

Source: RevenueBase Database · checked Sep 24, 2026
18Partial evidenceColumbia, MD, United StatesHQ checked Sep 24, 20261-104 contacts →

Partial evidence

“Altairzen is a Technology Business Incubator and Consulting firm that specializes in Strategy, Digital Development, Communications and Research.”

Source: RevenueBase Database · checked Sep 24, 2026
19Partial evidenceColumbia, MD, United StatesHQ checked Sep 24, 202611-503 contacts →

Partial evidence

“Advancement Strategy Consulting is a consulting company with a purpose.”

Source: RevenueBase Database · checked Sep 24, 2026
20Indirect evidenceColumbia, MD, United StatesHQ checked Sep 24, 202611-503 contacts →

Indirect evidence

“Honovee is an ISO 9001:2015, ISO 27001:2013, and ISO certified Small Business, headquartered in National Capital Region, providing digital transformation, systems engineering and…”

Source: RevenueBase Database · checked Sep 24, 2026
21Indirect evidenceColumbia, MD, United StatesHQ checked Sep 24, 20261-103 contacts →

Indirect evidence

“Who We Are: We are an award-winning, dynamic, client-centric professional services firm passionately committed to delivering outstanding results.”

Source: RevenueBase Database · checked Sep 24, 2026
22Indirect evidenceColumbia, SC, United StatesHQ checked Sep 24, 202611-502 contacts →

Indirect evidence

“When the mission is critical, our clients depend on J.A.”

Source: RevenueBase Database · checked Sep 24, 2026
23Indirect evidenceColumbia, SC, United StatesHQ checked Sep 24, 202611-502 contacts →

Indirect evidence

“innovalti is not just a leader in technological innovation; we are a catalyst for profitable growth.”

Source: RevenueBase Database · checked Sep 24, 2026
24Partial evidenceColumbia, United StatesHQ checked Sep 24, 20261-101 contacts →

Partial evidence

“Hi, I'm Phil.”

Source: RevenueBase Database · checked Sep 24, 2026
25Partial evidenceColumbia, SC, United StatesHQ checked Sep 24, 20261-101 contacts →

Partial evidence

“KLEAR Technologies, LLC, is a IT consulting business specializing in digital transformations for the healthcare industry.”

Source: RevenueBase Database · checked Sep 24, 2026

Showing 25 of 57 d and i consulting firms based in Columbia, United States

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 2,955 reachable decision-makers.

Free signup · no credit card

View the full list →

D and i consulting firms based in Columbia, United States at a glance

As of Sep 24, 2026
54.2%Verified-email coverage
95.7Average contacts per company
11-50Median size (employees)
Sep 24, 2026Page data refreshed

Companies by employee count

1-10
26
11-50
21
51-200
9
10001+
1

Email recency for this list is measured across the whole United States list rather than for Columbia, so it is reported there. Company counts and contact totals on this page are exact for Columbia, over 57 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 d and i consulting firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source
The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies
Companies headquartered in Columbia, United States whose own description of what they do matches “d and i consulting firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search
RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names d and i consulting firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude
Companies whose own description does not clearly place them among d and i consulting firms, and records with no verified work email. Companies headquartered outside Columbia 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, 2,955 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 24, 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.

D and i consulting 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 d and i consulting firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many d and i consulting firms are there based in Columbia, United States?

RevenueBase identified 57 d and i consulting firms headquartered in Columbia, 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?

Merkle, headquartered in Columbia, tops this list with the largest team on record.

Which city in the United States has the most d and i consulting firms?

New York leads the United States with 1,070 headquartered companies, followed by Chicago (526) and Atlanta (478). Columbia has 57.

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 2,955 verified decision-maker contacts tracked across these 57 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 24, 2026.

Ready to reach these companies? Verified emails and direct dials for all 57 d and i consulting firms based in Columbia, United States. Start with a free account, no credit card.

Download this list →

Related 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 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.