25.12.4
This website uses cookies to ensure you get the best experience on our website.
Learn more
Got it!
Skip to main content
Suggested Credentials
Sign in
MA
Matthew Allen
2 Credentials
1 Issuer
The International Society of Arboriculture
Hereby Announces That
Has Earned the Credential
ISA Tree Risk Assessment Qualification®
By successfully meeting ISA Tree Risk Assessment Qualification requirements through demonstrated attainment of relevant competencies as supported by the ISA Credentialing Council
19 October 2018
Issue Date
Expiration Date
27 October 2028
Caitlyn Pollihan CEO & Executive Director
Matthew Allen
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
October 19, 2018
International Society of Arboriculture
The International Society of Arboriculture
Hereby Announces That
Has Earned the Credential
ISA Board Certified Master Arborist®
By successfully meeting ISA Board Certified Master Arborist certification requirements through demonstrated attainment of relevant competencies as supported by the ISA Credentialing Council
29 October 2010
Issue Date
Expiration Date
Certification Number
31 December 2025
Caitlyn Pollihan CEO & Executive Director
Matthew Allen
PN-2695B
ISA Board Certified Master Arborist®
ISA Board Certified Master Arborist®
October 29, 2010
International Society of Arboriculture
