Company lists · Data refreshed September 2026

Top 25 D and i consulting firms based in the United States

Name: D and i consulting firms based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 24, 2026 20,603 companies tracked

RevenueBase identified 20,603 company matches for d and i consulting firms associated with the United States as of September 2026 and tracks 984,067 professional contacts across them, including 331,195 with verified work emails and 170,339 with mobile numbers. New York is the largest hub.

This list covers company matches for d and i consulting 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 24, 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 RevenueBase SmartSearch · Exact Recorded Sep 24, 2026 How this list was built

20,603Companies

984,067Contacts tracked

331,195Verified emails

170,339Mobile numbers

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

Ranked by team size

Top 25 of 20,603 company matches for d and i consulting firms based in the United States, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 24, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	EXL	Exact match	New York, NY, United StatesHQ recorded Sep 24, 2026	10001+	40,100 contacts →
	Exact match “Choosing a digital partner is about more than capabilities, it’s about collaboration and character.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
2	Boston Consulting Group BCG	Exact match	Boston, MA, United StatesHQ recorded Sep 24, 2026	10001+	38,730 contacts →
	Exact match “Boston Consulting Group partners with leaders in business and society to tackle their most important challenges and capture their greatest opportunities.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
3	UST	Exact match	Aliso Viejo, CA, United StatesHQ recorded Sep 24, 2026	10001+	34,875 contacts →
	Exact match “UST is a global digital transformation solutions provider.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
4	Globallogic	Exact match	Santa Clara, CA, United StatesHQ recorded Sep 24, 2026	10001+	30,977 contacts →
	Exact match “GlobalLogic, a Hitachi Group company, is a trusted partner in design, data, and digital engineering for the world’s largest and most innovative companies.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
5	Conduent	Exact match	Florham Park, NJ, United StatesHQ recorded Sep 24, 2026	10001+	30,315 contacts →
	Exact match “Conduent delivers digital business solutions and services spanning the commercial, government and transportation spectrum – creating valuable outcomes for its clients and the…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
6	Globant	Exact match	San Francisco, CA, United StatesHQ recorded Sep 24, 2026	10001+	26,919 contacts →
	Exact match “At Globant, we create the digitally-native products that people love.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
7	Teksystems	Exact match	Hanover, MD, United StatesHQ recorded Sep 24, 2026	10001+	24,693 contacts →
	Exact match “We’re TEKsystems and TEKsystems Global Services.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
8	NTT Data North America	Exact match	Plano, TX, United StatesHQ recorded Sep 24, 2026	10001+	22,390 contacts →
	Exact match “NTT DATA, Inc.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
9	Bain & Company	Exact match	Boston, MA, United StatesHQ recorded Sep 24, 2026	10001+	21,689 contacts →
	Exact match “Bain & Company is a global consultancy that helps the world’s most ambitious change makers define the future.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
10	ZS	Exact match	Evanston, IL, United StatesHQ recorded Sep 24, 2026	10001+	16,896 contacts →
	Exact match “ZS is a management consulting and technology firm that partners with companies to improve life and how we live it.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
11	CDW	Exact match	Vernon Hills, IL, United StatesHQ recorded Sep 24, 2026	10001+	13,155 contacts →
	Exact match “At CDW, we know how to make technology work so people can do great things.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
12	Infinite Computer Solutions	Exact match	Rockville, MD, United StatesHQ recorded Sep 24, 2026	10001+	12,891 contacts →
	Exact match “Infinite is a.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
13	Synechron	Exact match	New York, NY, United StatesHQ recorded Sep 24, 2026	10001+	12,820 contacts →
	Exact match “At Synechron, we believe in the power of digital to transform businesses for the better.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
14	Thoughtworks	Exact match	Chicago, IL, United StatesHQ recorded Sep 24, 2026	10001+	11,634 contacts →
	Exact match “We are a global technology consultancy that delivers extraordinary impact by blending design, engineering and AI expertise.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
15	Softserve	Exact match	Austin, TX, United StatesHQ recorded Sep 24, 2026	10001+	11,123 contacts →
	Exact match “SoftServe is a technology services company specializing in autonomous enterprises with capabilities in AI-native applications, physical and agentic AI, cloud and data solutions.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
16	Slalom	Exact match	Seattle, WA, United StatesHQ recorded Sep 24, 2026	10001+	10,032 contacts →
	Exact match “Slalom is a fiercely human business and technology consulting company that leads with outcomes to bring more value, in all ways, always.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
17	World Wide Technology	Exact match	Maryland Heights, MO, United StatesHQ recorded Sep 24, 2026	10001+	9,184 contacts →
	Exact match “We are thinkers and doers.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
18	Protiviti	Exact match	Menlo Park, CA, United StatesHQ recorded Sep 24, 2026	5,001-10,000	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 24, 2026 · View company records in RevenueBase
19	Ci&t	Exact match	New York, NY, United StatesHQ recorded Sep 24, 2026	5,001-10,000	8,037 contacts →
	Exact match “We are your global partner in tech-integrated business solutions, turning AI ambition into measurable business impact.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
20	Yash Technologies	Exact match	East Moline, IL, United StatesHQ recorded Sep 24, 2026	5,001-10,000	7,769 contacts →
	Exact match “YASH Technologies is a consulting-led transformation partner with a proven track record of helping customers address their current and prospective digital transformation…” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
21	R Systems	Exact match	El Dorado Hills, CA, United StatesHQ recorded Sep 24, 2026	5,001-10,000	7,360 contacts →
	Exact match “RSI is a trusted software engineering and digital transformation services partner to global enterprises navigating technological change.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
22	Kearney	Exact match	Chicago, IL, United StatesHQ recorded Sep 24, 2026	5,001-10,000	6,978 contacts →
	Exact match “As one of the original firms, we’ve never lost sight of the fact that consulting is a people business.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
23	Tiger Analytics	Exact match	Santa Clara, CA, United StatesHQ recorded Sep 24, 2026	5,001-10,000	6,160 contacts →
	Exact match “In a world rife with complexity, we help our customers cut through uncertainty, plan strategically, and execute confidently.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
24	Accenture Strategy & Consulting	Exact match	Chicago, IL, United StatesHQ recorded Sep 24, 2026	5,001-10,000	5,514 contacts →
	Exact match “Accenture Strategy combines deep industry expertise, advanced analytics capabilities and human-led design methodologies that enable clients to act with speed and confidence.” Recorded in the RevenueBase company graph · Sep 24, 2026 · View company records in RevenueBase
25	Perficient	Exact match	St. Louis, MO, United StatesHQ recorded Sep 24, 2026	5,001-10,000	5,336 contacts →
	Exact match “Perficient is the global AI and technology consulting firm disrupting the traditional consulting model.” Recorded in the RevenueBase company graph · Sep 24, 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 “d and i consulting 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 20,603 d and i consulting firms based in the United States

See the full list, filter by size, metro and specialty, and access 331,195 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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

As of Sep 24, 2026

33.7%Verified-email coverage

17.3%Mobile-number coverage

47.8Average contacts per company

1-10Median size (employees)

5.7%Largest-city concentration · New York

Sep 24, 2026Page data refreshed

Companies by employee count

1-10

11,902

11-50

5,442

51-200

2,354

201-500

643

501-1,000

239

1,001-5,000

197

5,001-10,000

10001+

Freshness & accuracy

How recently the business emails were verified and the company information checked

Email last verified

Median 27.0d

243,9830–30

74,60731–60

6,73661–90

34790–180

5,522180+

Company record updated

Median 83.5d

00–30

169,27731–60

448,38961–90

310,34490–180

56,057180+

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 “d and i consulting 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 331,195 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 24, 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.

D and i consulting 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 “d and i consulting firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

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

RevenueBase identified 20,603 company matches for d and i consulting 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?

EXL tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most d and i consulting firms?

New York leads with 1170 company records, followed by Chicago (526) and Atlanta (478).

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 331,195 professional contacts with verified work emails tracked across these 20,603 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 24, 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 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.