The Gagnon Group, LLC Employee Directory

Q: What is The Gagnon Group, LLC known for?

The Gagnon Group, LLC was founded in 2001. The Gagnon Group, LLC operates in the Accounting industry.

Q: How many employees does The Gagnon Group, LLC have currently?

The Gagnon Group, LLC has approximately 13 employees.

AccountingMassachusetts, United States11-50 Employees

GAGNONtax is a tax-only consulting firm committed to serving the needs of our clients with our unique combination of technical expertise, integrity and flexibility. Our team is comprised of career tax professionals who are recognized specialists in their fields.

Many of our clients are large publicly-held companies that look to us to provide tax consulting, technology, and compliance.

Services for corporate clients include technical consulting in a broad array of federal and state tax disciplines, tax compliance for organizations of any complexity using all leading preparation software platforms, and technology solution development, design and integration.  

Since 2001, GAGNONtax has delivered large firm quality with a small firm’s dedication to client service.

Find The Gagnon Group, LLC employees' phone numbers or email addresses

The Gagnon Group, LLC Global Highlights

North America
14

United States Of America
14

The Gagnon Group, LLC's Leadership

W. G.
Founder President
Mobile Phone
Email
M. H.
Partner
Mobile Phone
Email
J. G.
Owner
Mobile Phone
Email
J. G.
Owner
Mobile Phone
Email
S. L.
Vice-President
Mobile Phone
Email
C. J.
Controller
Mobile Phone
Email
Y. M.
Office Manager Associate
Mobile Phone
Email
M. C.
Information Technology Administrator
Mobile Phone
Email

Contact profiles from The Gagnon Group, LLC

Name

Title

Contact Info

Location

Last Update

M. H.
Partner
Mobile Phone
Email
United StatesMassachusetts
Aug 12, 2025
J. G.
Owner
Mobile Phone
Email
United StatesPennsylvania
Nov 17, 2025
J. G.
Owner
Mobile Phone
Email
United StatesNew Jersey
Jul 19, 2025
W. G.
Founder President
Mobile Phone
Email
Sep 13, 2024
S. L.
Vice-President
Mobile Phone
Email
Oct 16, 2024
C. J.
Controller
Mobile Phone
Email
United StatesMinnesota
Jun 27, 2025
Y. M.
Office Manager Associate
Mobile Phone
Email
Oct 17, 2024
M. C.
Information Technology Administrator
Mobile Phone
Email
UNITED STATES
Mar 08, 2023
M. C.
Executive Assistant/Office Manager/Tax Preparer
Mobile Phone
Email
UNITED STATES
Apr 07, 2023
M. H.
Mobile Phone
Email
UNITED STATES
Oct 16, 2024

Frequently Asked Questions

What is The Gagnon Group, LLC known for?

The Gagnon Group, LLC was founded in 2001 operates in the Accounting industry; you can contact the main corporate office by phone at

+1-617-451-****

. Explore The Gagnon Group, LLC's company overview page for more information.

What is The Gagnon Group, LLC's most common email format?

The Gagnon Group, LLC employees' email format typically follows the pattern of . Trying to find reliable and up-to-date employee contact data? Find more The Gagnon Group, LLC email formats with LeadIQ.

How many employees does The Gagnon Group, LLC have currently?

The Gagnon Group, LLC has approximately 13 employees as of December 2025. These team members are located across 1 continents, including North America.

Who are The Gagnon Group, LLC's key employees and leadership?

As of December 2025, The Gagnon Group, LLC's key employees include:

Founder President: W. G.
Partner: M. H.
Owner: J. G.
Owner: J. G.
Vice-President: S. L.

Looking for contact data? Unlock accurate emails and phone numbers for your ideal prospects with LeadIQ.

Everything for prospecting,
in one platform.

What you can expect from LeadIQ:

B2B data verified in real-time
Sync data to your CRM, & add it to an outreach sequence in one click
Integrations with your tech stack for optimal efficiency
A patented AI cold email generator
Account & contact-level job change tracking