Seneca Washington


Seneca Washington provides a continuum of care ranging from school-based to community-based programs. Seneca’s programs in Washington State represent the agency’s first full-time presence outside of California.

Seneca currently partners with Seattle Public Schools and charter schools in the Puget Sound area to provide assistance in designing inclusive school-wide practices and systems with a focus on early identification and intervention. Our work is guided by Seneca’s Unconditional Education model, which offers a framework for integrated and multi-tiered systems of support that promote the academic, social-emotional and behavioral development of ALL students at each school.

Seneca Washington’s community-based programs offer a continuum of supports that span the fields of child welfare, juvenile justice, and mental health. Seneca provides comprehensive mental health services through an outpatient clinic and Wraparound with Intensive Services (WISe) throughout South King County. Seneca also partners with King County and other community-based organizations in implementing an outreach program for commercially sexually exploited children (CSEC) and works as part of the Juvenile Justice Assessment Team at the Children and Family Justice Center.

Washington Services

Technical assistance: Implementation of the positive behavioral interventions and supports (PBIS) model, trainings in trauma-informed practices, Commercially Sexual Exploitation of Children (CSEC) Outreach and trainings

Community-Based Mental Health and Juvenile Justice Services: Commercially Sexually Exploited Children (CSEC) Outreach, Juvenile Justice Assessment Team (JJAT), Outpatient Clinic, and Wraparound with Intensive Services (WISe)

Student Supports, including:
Behavioral: Crisis management and re-integration of students with behavioral needs back into the classroom as quickly as possible so that they can continue to learn. Academic: Generating and implementing specially designed instruction that is aligned with and enriches the grade-level curriculum.
Mental health: Treatment planning and provision of individualized therapeutic services for students with emotional challenges.

Washington Programs

Outpatient Clinic:
For local young people and families impacted by trauma, anxiety, depression, and other profound challenges, Seneca’s outpatient clinic offers individual and family therapy, intensive social-emotional support and crisis services, and psychiatry services. The Outpatient Clinic is actively accepting referrals. Our main service areas are: South Seattle (below I-90), West Seattle, White Center, Burien, Tukwila, SeaTac, Des Moines and Renton. We can, however, be flexible and serve children and families in other areas in King County as needed. Please send any Medicaid eligible clients our way; click here to access the Outpatient Referral Form (English) or Outpatient Referral Form (Spanish). To refer a child/youth or to ask any questions, please contact:
Phone: (206) 490-0865 - Monday-Friday 8am-5pm

Wraparound with Intensive Services (WISe):
The WISe program is a family-centered, individualized, and strength-based intensive service for Medicaid-eligible children and youth from birth to 21 years old. This program uses a team-based approach to address complex needs for youths and families and support them in meeting their identified goals.
For questions or to make referrals call the Seneca WISe line at (206) 490-0985 or (877) 949-4647. To learn more about the WISe program, contact WISe Supervisor Helen Roubinian at

Washington Programs, Continued

Commercially Sexually Exploited Children (CSEC) Outreach – King County
The Seneca CSEC Outreach Program partners with schools, community-based organizations, faith-based organizations, and healthcare providers to build the capacity of school and other professionals to identify and engage with youth who are at risk of sexual exploitation or are currently exploited. For more information on Seneca’s CSEC Outreach work, visit our CSEC Outreach page.

Juvenile Justice Assessment Team (JJAT) – King County
In partnership with Ryther Center for Children and Youth, Seneca conducts mental health assessments, substance use disorder assessments, and family linkages for youth ages 12 to 20 that enter the juvenile justice system. JJAT works to divert youth with behavioral needs from further involvement in the juvenile justice system and decrease incidences or severity of chemical dependency and mental health diagnosis in young people. To learn more about JJAT, contact Program Supervisor Helen Roubinian at

School-Based Programs

Unconditional Education, Charter Schools - Seattle, Tacoma Implemented in California and Washington State, Seneca’s Unconditional Education (UE) model empowers the entire school community with the skills and resources they need to implement a multi-tiered system of academic, behavioral, and social emotional supports for all students. For more information on the Unconditional Education Program in Washington charter schools, contact Gini Sanders at

Unconditional Education, Seattle Public Schools - Seattle Seneca provides direct service support to multiple Seattle public schools, as well as school- and district-level systems development. To learn more about Seneca's partnership with Seattle Public Schools, contact Sasha Tyshler at

InTandem Program - Seattle
For information on Seneca’s day treatment program at InTandem, contact


Washington State Administrative Headquarters

Seneca Family of Agencies
13925 Interurban Ave S
Suite 120
Tukwila, WA 98168

Phone: 206-948-0096

Commitment to Diversity, Equity, and Inclusion
Seneca Washington is committed to practicing cultural humility and fostering diversity, equity, and inclusion within our workplaces, schools, and communities. To read more about Seneca Washington's DEI commitment, click here.

Our Staff
Seneca staff are committed to providing high quality care in partnership with the children and families we serve. In accordance with WAC 388-877-0640(1) and RCW 18.19.060, please see our Counselor Disclosure for a list of our staff and their credentials.

For information on current Seneca Washington employment opportunities, click here. Questions? Our recruiting team can be reached at or 510-317-1437.


Robin Detterman serves as Seneca’s Chief Program Officer of Educational Services where she provides leadership for the agency’s continuum of district and charter partnerships and five non-public schools, serving over 100 districts and schools in California and Washington State each year. Ms. Detterman started working at Seneca in 2005, and her experience asa special education teacher and administrator informs her current role. In this role, she supports Seneca’s education teams in the development and implementation of high quality, individualized services for students who need additional support at school while working to transform whole schools and school systems into places where all students are welcomed and can thrive. Ms. Detterman holds a MA degree in Special Education and is a graduate of Stanford University, where she earned a Masters degree in Education Policy and Organizational Leadership. She is the co-author of Unconditional Education: Supporting Schools to Serve All Students (Oxford University Press, 2019).


Nathaniel Foster is the Chief Advancement Officer of Seneca Family of Agencies. His focus is on development, fundraising, venture philanthropy, marketing and branding for the whole organization. Nathaniel came to Seneca with a clarity and depth of fundraising knowledge that has accelerated our overall efforts. Nathaniel graduated from the University of Denver with a BS in business and also has his Master’s in Nonprofit Leadership from Seattle University. He has over a decade of experience in the non-profit development & management world, working with local, national, and international organizations. Previously Nathaniel was the Executive Director of Playworks, anonprofit that serves over 700,000 children every school day, concentrating on conflict resolution, leadership skills, emotional intelligence and increased physical activity for elementary schools throughout the country. Before that, he was the Chief Development & Marketing Officer at Lincoln, formerly Lincoln Child Center. He has spent his entire nonprofit career in development, fundraising, board development, venture philanthropy, and communications and is very excited to be working with an organization as wonderful as Seneca Family of Agencies. In addition, he was co-chair for the Oakland Quality Community Schools Committee, currently sits on two for-profit boards, and is a member of the San Francisco Chapter of the Private Asset Liaison Group


Michael Alonso is the Chief Information Officer for Seneca Family of Agencies. Since joining Seneca in 2003, he has provided leadership for all technology related operations throughout the organization. He is responsible for IT strategy and vision as well as oversight for the teams that create and maintain a robust information technology environment in addition to the teams that develop, deliver and support innovative applications specifically created for Seneca’s unique blend of services.Michael is passionate about designing and producing creatively unique solutions to increase efficiency and improve service delivery and is personally involved to a significant degree in Seneca’s application development process. In addition to internally-focused activities, Michael engages with organizations at the county, state and federal levels to represent the technology-related interests and perspective of both Seneca and the broader community of behavioral health providers. These organizations includecounties, other behavioral health providers, state advocacy groups and the Office of the National Coordinator for Health IT (ONCHIT). Before coming to Seneca, Michael worked in the custom software industry, developing applications tailored for a wide variety of companies representing numerous industries such as healthcare, retail, technology, non-profit and more. During this time, he took an interest not just in the software development process, but also in the broader perspective of organization-wide information technology environments. Michael holds a B.S. in Computer Science from CSU Hayward (now CSU East Bay)


Janet Briggs, Chief Financial Officer of Seneca Family of Agencies, began her endeavor in finance by achieving her bachelors’ degree in Business Economics with an Accounting Emphasis from the University of California Santa Barbara. Janet began her career in Public Accounting working in various industries gaining extensive experience in accounting and business management and then specializing in providing audit and accounting services for various not for profit social service agencies as a CPA. Her in-depth understanding of accounting issues and regulations unique to not for profit agencies has distinguished Janet as a knowledgeable source and leader for this company. Since coming to Seneca in 2002, Janet has supervised and trained an ever-growing accounting staff on various accounting policies and procedures pertaining to Seneca programs. Not only does she review and monitor numerous county and state contracts, Janet also oversees all fiscal activity for over 150 programs in 20 different counties. Attending monthly fiscal program meetings, Janet is dedicated to effectively communicating with directors and managing the financial integrity of Seneca. In an effort to constantly improve practice and management skills, Janet regularly attends conferences and trainings specific to her role at Seneca. In addition to her successes here at Seneca Family of Agencies, Janet also is a mother to two wonderful boys.


Ken Berrick is the founder and Chief Executive Officer (CEO) Emeritus of Seneca Family of Agencies, a nonprofit agency dedicated to providing Unconditional Care to children and families through comprehensive mental health, education, juvenile justice, placement and permanency services. Since its founding in 1985, Seneca has developed innovative programs ranging from Wraparound and Intensive Treatment Foster Care, to integrated mental health services in schools, and a crisis continuum of care for youth and their families. Mr. Berrick is Governor-appointed Commissioner on the Mental Health Services Oversight and Accountability Commission. He is also a Governor’s Appointee on the California Child Welfare Council, where he co-chairs the Behavioral Health Committee, tasked with developing best practice recommendations to guide policy and inform statewide efforts to effectively address the behavioral health needs of children involved in or at risk of involvement in the child welfare system. Mr. Berrick is a two-time former President of the California Alliance of Child and Family Services and serves on numerous policy planning groups in California at both the county and state-level. He is an elected member and Past-President of the Alameda County Board of Education, and Past-President of the California County Boards of Education. In 2014, he was recognized by California Mental Health Advocates for Children and Youth as Advocate of the Year. In 2017, he was a recipient of the James Irvine Foundation Leadership Award, and in 2021, a recipient of the Jefferson Bronze Award. He is co-author of the books, Unconditional Care: Relationship-Based, Behavioral Intervention with Vulnerable Children and Families (Oxford University Press, 2010), and Unconditional Education (Oxford University Press, 2019).

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Leticia Galyean is the Chief Executive Officer (CEO) of Seneca Family of Agencies, a nonprofit agency dedicated to providing Unconditional Care to youth and their families throughout California and Washington State. She received both her Bachelor’s degree and Masters of Social Work from the University of California, Berkeley.

Leticia began her career with Seneca in 2001 as a Wraparound counselor inspired by the passionate belief that the effects of childhood trauma should be patiently and persistently supported in the context of family and community. Throughout her tenure at Seneca, Leticia has served as Program Director; Regional Executive Director; Executive Director of Data, Evaluation, and Strategic Initiatives; and Chief Operating Officer.

She has developed, led, and evaluated numerous programs across the Bay Area and Central Coast, assisting youth and their families to meet their behavioral health, academic, and permanency goals. Leticia is a frequent presenter at national conferences on Seneca’s Unconditional Care treatment model and behavioral health interventions. As CEO, Leticia oversees all aspects of Seneca including 150+ programs, with 1,400+ employees, serving 18,000+ youth and their families, annually.

She has served as a member of several policy development groups in California at both the county and state-level. Leticia also serves as an active member of the California Alliance for Child & Family Services, California Council of Community Behavioral Health Agencies, the Alliance for Strong Families and Communities, and is a Board member of SOAR for Youth. From the time she was a counselor through her entire tenure at Seneca, Leticia has led with the vision to strengthen the larger systems of care for our most vulnerable youth and their families.