Our Clinicians


Christina Alexander, MA LMFT RDT MHP

Christina is a Licensed Marriage and Family Therapist and Registered Drama Therapist who is experienced in working with children (ages 3 and up), teens, parents/caregivers, and families. Her approach to therapy is strengths-based and collaborative, and is rooted in Family Systems Theory. Her practice incorporates Cognitive Behavior Therapy, Trauma-Focused Cognitive Behavior Therapy, Narrative Therapy, Experiential and Expressive Arts Therapies, play-based therapies, and Solution-Focused Therapy.

Christina specializes in treating young children and adolescents with behavioral issues, depression, anxiety, trauma, adjustment difficulties, and social/emotional challenges. She has experience leading therapeutic groups and social skills groups. Christina is also certified in Parent-Child Interaction Therapy, a short-term and highly structured treatment proven to improve the caregiver-child bond, increase warmth and attachment, and reduce child behavioral problems.

Christina is able to bill out of network and provides sliding scale services. 

Christina is accepting new clients on Thursdays only. To reach Christina, call (206) 494-3377, extension 1.

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Claire Mathieson, MSW LSWAIC

Claire graduated from Marymount Manhattan College in 2006 with a Bachelors in Sociology, and from University of Washington in 2016 with a Masters in Social Work. For over a decade, Claire has worked in various positions as a case manager, licensor, social worker and clinician at both non-profit and Government agencies. Claire's focus has been advocacy and empowerment of vulnerable communities such as: children and teens in foster care; adults with substance use disorders; PTSD; anxiety; and trauma; refugees and immigrant communities; and support and resources for adoptive families and adoptees.

"My primary counseling approach is social justice oriented and based in a relational psychodynamic model. I am influenced by other modalities including narrative theory, family systems, multicultural counseling, attachment theory, and cognitive behavioral therapy. I utilize a conversational and compassionate approach to therapy.  

I see color, I see race, I see privilege and I see oppression. I honor identity in the context of institutional racism, sexism, and other -isms, as one component of the healing process. I support the exploration of the past in order to identify both healthy and unhelpful coping mechanisms. Whatever has brought you here today has worked - you have survived. I challenge you now to do more than survive, and truly live."  

Claire is able to bill out of network and provides sliding scale services. Claire is not currently accepting new clients.

To reach Claire, call (206) 494-3377, extension 2.

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Katy Greenleaf, MA LMHC MHP CMHS

Katy has been working mainly with youth and families since she received her Masters in Psychology from Antioch University Seattle in 2007. She currently works at Seattle Children's Hospital in addition to being in private practice. Katy also provides workshops and trainings on suicide prevention, parenting through connection, wraparound services, and the continuum of mental health care in King County. 

Katy is a family therapist at heart, who also provides individual and couples therapy. She uses a psychodynamic approach and feminist theory to in her work with individual adults and youth. Katy has particular insight and expertise working with highly sensitive and intelligent youth and their families.

Katy is in network with Regence, some Blue Cross/Blue Shield networks, Group Health/ Kaiser Permanente, and First Choice Health. She also provides services "out of network" and sliding scale services to clients who are un(der)insured. 

Katy is currently accepting new clients Mondays, Tuesdays, and Wednesdays.

You can reach Katy by calling (206) 494-3377 extension 0.

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