25.13.16
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
MS
Mary Sheffield
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
28 February 2025
Issue Date
Expiration Date
28 February 2030
Caitlyn Pollihan CEO & Executive Director
Mary Sheffield
ISA Tree Risk Assessment Qualification®
ISA Tree Risk Assessment Qualification®
February 28, 2025
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
23 March 2007
Issue Date
Expiration Date
Certification Number
30 June 2028
Caitlyn Pollihan CEO & Executive Director
Mary Sheffield
#0847 ISA Certified Arborist
SO-5735A
ISA Certified Arborist ®
ISA Certified Arborist ®
March 23, 2007
International Society of Arboriculture
