25.10.20
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NH
Nathan H. Birx
1 Credential
1 Issuer
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
30 June 1999
Issue Date
Expiration Date
Certification Number
30 June 2026
Caitlyn Pollihan CEO & Executive Director
Nathan H. Birx
#0847 ISA Certified Arborist
MA-3141A
ISA Certified Arborist ®
ISA Certified Arborist ®
June 30, 1999
International Society of Arboriculture
