Contact Us

Our chapter office is pleased to handle your inquiries or listen to your concerns. You can contact us about any topic related to ISA Certification, membership, or PNW-ISA programs.

Chapter Mailing Address

10793 SW Canterbury Lane, Ste. 104, Tigard, OR 97224

General Questions, Membership, Certifications and Registration

Sharon Korte
Member Services Coordinator

  • Email:
  • Local: (503) 874-8263
  • Toll Free: (800) 335-4391
  • Fax: (503) 874-1509

Continuing Education, Strategic Direction and Operations

Cristina Bowerman
Executive Director

  • Email:
  • Phone: (470) 241-8192

Tree Climbing Competitions

Damien Carre
Chair, Tree Climbing Competitions

  • Email:
  • Phone: 503-929-9437


Dash Buck
Technology Support

  • Email:

Contact the Board

To get in touch with a specific board member, please visit our Staff & Board listing.