Our Team
Executive
Dr. James Williams, CRC
Executive Director | he/him/his |
Dr. James Williams has spent over two decades advancing opportunities for people with disabilities in education, employment, and independent living. A proud member of the disability community himself, Dr. Williams brings both personal insight and professional expertise to his work—qualities that have shaped him into a trusted advocate and leader in the field.
Before joining The Arc of King County, Dr. Williams served as Division Administrator for Iowa Vocational Rehabilitation Services and as CEO of Bloom Consulting, where he specialized in vocational services and support for autistic individuals. Over the years, he has built a reputation for fostering equity and inclusion through person-centered services, innovative program design, and a deep commitment to empowering people with disabilities to thrive.
His professional background includes credentials as a Certified Rehabilitation Counselor, Certified Autism Specialist, and Certified Special Education Teacher. He earned his Doctor of Education in Educational Leadership from Lamar University, a Master of Science in Rehabilitation Counseling from Texas Tech University Health Sciences Center, and a Bachelor of Science in Special Education from Sam Houston State University.
At The Arc of King County, Dr. Williams leads with a mission-driven spirit, grounded in the belief that breaking down barriers and championing disability rights can transform communities. He is especially excited about advancing initiatives like The Arc Legacy Center and building on the organization’s proud history of advocacy and support.
Information & Family Support
Rachel Nemhauser
Director of Information and Family Support | she/her/hers |
rnemhauser@arcofkingcounty.org |
206.829.7046
Jae Kim
Information and Referral Program Manager| she/her/hers| jkim@arcofkingcounty.org | 206.829.7013
Elisabeth Maher
Information and Resource Coordinator | she/her/hers |
emaher@arcofkingcounty.org
Zack Siddeek
Disability Systems Navigation Coordinator | he/him/his | zsiddeek@arcofkingcounty.org
Sandra Urite
Multicultural Family Support Program Manager | she/her/hers| surite@arcofkingcounty.org | 206.829.7028
Tracie Warren
Future Planning Support Program Manager | she/her/hers| twarren@arcofkingcounty.org | 206.578.3152
Brenda Zacapu
Parent to Parent Coordinator for Spanish-Speaking Families| she/her/hers| bzacapu@arcofkingcounty.org | 206.829.7027
Public Policy & Civic Engagement
Ramona Hattendorf
Director of Public Policy & Civic Engagement | she/her/hers
Eric Matthes
Community Advocacy Coordinator | he/him/his | ematthes@arcofkingcounty.org | 206.829.7044
Pam Phillips
Mobilization & Communication Coordinator she/her/hers pphillips@arcofkingcounty.org
Supported Living
Madison Ribich
Director of Supported Living | she/her/hers| mribich@arcofkingcounty.org
Kevin Cook
Assistant Director of Supported Living | he/him/his | kcook@arcofkingcounty.org
Robb Jones
Supported Living Manager | he/him/his | rjones@arcofkingcounty.org | 206.829.7017
Jeff Barnes
Quality Assurance and Outcomes Manager | jbarnes@arcofkingcounty.org
Mariam Bah
Healthcare Specialist | she/hers/her | mariambah@arcofkingcounty.org
Ismael Jammeh
Healthcare Specialist | he/him/his| ijammeh@arcofkingcounty.org
Hassim Tunkara
Coordinator | he/him/his | gtunkara@arcofkingcounty.org
Beck Escamilla
Coordinator | she/they/hers/theirs | bescamilla@arcofkingcounty.org
Muhammed Lowe
Coordinator | he/him/his | mlowe@arcofkingcounty.org
Randi Megevand
Coordinator | she/hers/her | rmegevand@arcofkingcounty.org
Sheikh Sisay
Coordinator |he/him/his | ssisay@arcofkingcounty.org
Christine Okonjo
Coordinator | she/her/hers | cokonjo@arcofkingcounty.org
Ashley Turner
Service Coordinator Manager | she/her/hers | aturner@arcofkingcounty.org
Conner Lewis
Lead DSP Quality Assurance | he/him/his |
clewis@arcofkingcounty.org
Kotoring “Koko” Mambureh
Senior Lead DSP
Teresia Nyaga
Lead DSP
Bosco Hakizimana
Lead DSP
Development & Finance
Vacant
Director of Development
Stacy Van Wagoner
Grants & Corporate Giving Manager | she/her/hers | svanwagoner@arcofkingcounty.org
Ker Vang
Development Assistant | she/her/hers | kvang@arcofkingcounty.org
Vacant
Controller
Human Resources
Jessica Andersen
Director of Human Resources | she/her/hers | jandersen@arcofkingcounty.org | 206-829-7020
Nelson Mogaka
Human Resource Generalist | he/him/his