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
CM
Christopher McMaster
4 Credentials
1 Issuer
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
12 September 2022
Issue Date
Expiration Date
Certification Number
31 December 2025
Caitlyn Pollihan CEO & Executive Director
Christopher McMaster
TX-4221BM
ISA Board Certified Master Arborist®
ISA Board Certified Master Arborist®
September 12, 2022
International Society of Arboriculture
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
30 April 2021
Issue Date
Expiration Date
30 April 2026
Caitlyn Pollihan CEO & Executive Director
Christopher McMaster
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
April 30, 2021
International Society of Arboriculture
The International Society of Arboriculture
Hereby Announces That
Has Earned the Credential
ISA Certified Urban Forest Professional
By successfully meeting ISA Certified Urban Forest Professional certification requirements through demonstrated attainment of relevant competencies as supported by the ISA Credentialing Council
6 March 2020
Issue Date
Expiration Date
Certification Number
30 June 2025
Caitlyn Pollihan CEO & Executive Director
Christopher McMaster
TX-4221AM
ISA Certified Urban Forest Professional
ISA Certified Urban Forest Professional
March 6, 2020
International Society of Arboriculture
The International Society of Arboriculture
Hereby Announces That
Has Earned the Credential
ISA Certified Arborist ®
By successfully meeting ISA Certified Arborist certification requirements through demonstrated attainment of relevant competencies as supported by the ISA Credentialing Council
10 February 2016
Issue Date
Expiration Date
Certification Number
30 June 2025
Caitlyn Pollihan CEO & Executive Director
Christopher McMaster
#0847 ISA Certified Arborist
TX-4221AM
ISA Certified Arborist ®
ISA Certified Arborist ®
February 10, 2016
International Society of Arboriculture
