Insights

Acquisition synergies Marc um has been acquired by CBIZ, signaling potential cross-sell opportunities across CBIZ’s broad service lines including accounting, tax, advisory, benefits, insurance, and technology services to an expanded client base.

Mid-market focus CBIZ serves middle market businesses with deep industry expertise; target Marcum clients that may need integrated CBIZ offerings such as audit, tax optimization, and technology-enabled advisory to accelerate growth.

Tech enabled services CBIZ technology stack and digital capabilities (Adobe Cloud, AWS, BigQuery, Asana, ZoomInfo) open up opportunities to introduce cloud-based accounting, analytics, and automation solutions to Marcum’s client roster.

Growth prospects With scale of over 10,000 professionals across many locations and a combined platform, there is potential for expansions in specialized practice areas and cross-border or multi-location client engagements.

Strategic partnerships Recent market activities, including leadership hires and potential spin-offs, indicate a dynamic strategic environment—a chance to position complementary services (benefits, insurance, advisory) to enterprise clients near CBIZ’s evolving corporate structure.

Similar companies to Marcum LLP

Marcum LLP Tech Stack

Marcum LLP uses 8 technology products and services including Adobe Creative Cloud, Amazon Web Services, WordPress, and more. Explore Marcum LLP's tech stack below.

Media & News

Marcum LLP's Email Address Formats

Marcum LLP uses at least 12 email formats:
Marcum LLP Email FormatsExamplePercentage
First.Last@marcumllp.comJohn.Doe@marcumllp.com
95%
Last.First@marcumllp.comDoe.John@marcumllp.com
4%
First.Middle@marcumllp.comJohn.Michael@marcumllp.com
1%
First.Last@marcumtechnology.comJohn.Doe@marcumtechnology.com
100%
First.Last@marcumsearch.comJohn.Doe@marcumsearch.com
74%
Last@marcumsearch.comDoe@marcumsearch.com
22%
First.MiddleLast@marcumsearch.comJohn.MichaelDoe@marcumsearch.com
3%
First.Middle@marcumsearch.comJohn.Michael@marcumsearch.com
1%
FLast@cbiz.comJDoe@cbiz.com
74%
First.Last@cbiz.comJohn.Doe@cbiz.com
15%
FirstLast@cbiz.comJohnDoe@cbiz.com
7%
FirLast@cbiz.comJohDoe@cbiz.com
4%

Frequently Asked Questions

What is Marcum LLP's phone number?

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You can contact Marcum LLP's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Marcum LLP's official website and social media links?

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Marcum LLP's official website is cbiz.com and has social profiles on LinkedIn.

How much revenue does Marcum LLP generate?

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As of October 2026, Marcum LLP's annual revenue is estimated to be $1B - $10B.

What is Marcum LLP's SIC code and NAICS code?

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Marcum LLP's SIC code is 7389 - Business Services, Not Elsewhere Classified and NAICS code is 5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services.

How many employees does Marcum LLP have currently?

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As of October 2026, Marcum LLP has approximately 1.1K employees across 5 continents, including North America, Europe and Asia. Key team members include Cio / Consultant: K. M., Chief Human Capital Officer: C. D. and President And Head Historian: C. J. Explore Marcum LLP's employee directory with LeadIQ.

What industry does Marcum LLP belong to?

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Marcum LLP operates in the Accounting industry.

What technology does Marcum LLP use?

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Marcum LLP's tech stack includes Adobe Creative Cloud, Amazon Web Services, WordPress, Jenkins, Google BigQuery, Articulate 360, Asana and ZoomInfo.

What is Marcum LLP's email format?

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Marcum LLP's email format typically follows the pattern of First.Last@marcumllp.com. Find more Marcum LLP email formats with LeadIQ.

When was Marcum LLP founded?

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Marcum LLP was founded in 1951.
Marcum LLP logo

Marcum LLP

AccountingNew York, United States1001-5000 Employees

Marcum LLP is an accounting firm based in New York, located at 730 3rd Avenue, 11th Floor, New York, NY 10017, United States. On November 1, 2024, Marcum LLP was acquired by CBIZ, Inc., a national professional services firm serving middle market businesses and organizations. CBIZ provides services in accounting, tax, advisory, benefits, insurance, and technology, and employs more than 10,000 people across more than 160 locations in 21 major markets. The CBIZ organization operates CBIZ CPAs, a national independent CPA firm offering attest services for middle market and growing businesses across various industries; in certain jurisdictions, CBIZ CPAs P.C. operates under Mayer Hoffman McCann, P.C. Marcum LLP has a workforce of between 1,001 and 5,000 employees. More information about CBIZ is available at cbiz.com.

Section iconCompany Overview

Phone number
Website
cbiz.com
SIC Code
7389 - Business Services, Not Elsewhere Classified
NAICS Code
5412 - Accounting, Tax Preparation, Bookkeeping, and Payroll Services
Founded
1951
Employees
1001-5000

Section iconFunding & Financials

  • $1B - $10B

    Marcum LLP's revenue is estimated to be in the range of $1B - $10B

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