ISA Employee Directory

Non-profit OrganizationsGeorgia, United States51-200 Employees

Through research, technology, and education, the International Society of Arboriculture (ISA) promotes the professional practice of arboriculture and fosters a greater worldwide awareness of the benefits of trees, and has been doing so since its inception in 1924.

ISA exists so that professionals, allied professionals, public officials, and consumers worldwide recognize the economic, environmental, and societal benefits and values of trees and their care at a cost that demonstrates the wise stewardship of resources. We are registered in the State of Illinois as a 501c (5) nonprofit organization.

The following guiding principles provide a framework for our objectives and inspire us to advance ISA’s mission and communicate our philosophy to our diverse audiences. These guiding principles steer our organization and support our vision as we advance ISA's mission.

Research
ISA is focused on research and the dissemination of results to contribute to a world with healthier trees, sustainable communities, and a green economy.

Public Awareness
ISA is recognized by the public as the worldwide network for science-based information on the benefits and care of trees.

The public recognizes the value of trees, the need for proper tree care, and the benefits of trees to the environment.

Membership
ISA is a proactive, dynamic, and inclusive organization that provides for the needs of its diverse membership, resulting in engaged members that value the mission.

Professional Development
ISA is a cohesive, inclusive network of practitioners, scientists, and students that is recognized as the global source for arboricultural information and knowledge.

Promoting the Profession
Arborists are recognized as qualified, competent, and safe tree care professionals who are sought out the by the public, government organizations, and other professions.

Safety
Professional tree care practitioners have the required knowledge, training, and expertise to perform proper tree care safely.

Find ISA employees' phone numbers or email addresses

ISA Global Highlights

Location
Employees

North America
152

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  • United States Of America
    143
  • Canada
    6
  • Mexico
    3

Europe
9

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  • Netherlands
    3
  • United Kingdom Of Great Britain And Northern Ireland
    2
  • France
    1
  • Sweden
    1
  • Poland
    1
  • Norway
    1

Asia
2

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  • Malaysia
    1
  • India
    1

Africa
1

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  • Algeria
    1

South America
1

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  • Chile
    1

ISA's Leadership

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    D. D.
    President
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    D. K.
    President-Elect
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    T. F.
    President
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    C. B.
    President
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    J. M.
    President
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    T. S.
    Credentialing Partner & Operations Manager
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    D. N.
    Owner
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    C. K.
    Editor In Chief, Arboriculture And Urban Forestry
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Contact profiles from ISA

Name
Title
Contact Info
Location
Last Update
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    R. S.
    Educational Products Manager
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    United StatesGeorgia
    Apr 23, 2025
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    R. G.
    Compliance Manager
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    United StatesGeorgia
    Jul 27, 2024
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    S. D.
    Case Manager
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    Oct 16, 2024
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    T. H.
    Process Manager
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    Oct 23, 2024
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    W. M.
    Credentialing Operations Manager
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    UNITED STATES
    Oct 16, 2024
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    M. S.
    Exam Development Manager
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    United StatesIowa
    Aug 13, 2025
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    R. S.
    Board Certified Master Arborist (bcma)
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    NetherlandsGelderland
    Oct 22, 2025
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    A. J.
    Board Of Directors
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    United StatesFlorida
    Feb 22, 2025
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    B. T.
    Isa Board Certified Master Arborist #pd-0092b
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    United StatesPennsylvania
    Apr 25, 2024
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    C. J. C.
    Certified Arborist
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    United StatesFlorida
    Oct 19, 2025

Frequently Asked Questions

What is ISA known for?

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ISA was founded in 1924 operates in the Non-profit Organizations industry. The company's main headquarters is located in 270 Peachtree Street Northwest, Suite 1900; you can contact the main corporate office by phone at . Explore ISA's company overview page for more information.

What is ISA's most common email format?

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

How many employees does ISA have currently?

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ISA has approximately 150 employees as of December 2025. These team members are located across 5 continents, including North AmericaEuropeAsia.

Who are ISA's key employees and leadership?

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As of December 2025, ISA's key employees include:

  • President: D. D.
  • President-Elect: D. K.
  • President: T. F.
  • President: C. B.
  • President: J. M.

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