Requires the state health care authority to: (1) Oversee the coordination of resources and services through the managed health care system and tribal organizations providing health care services for children who are eligible for medical assistance and have been identified as requiring mental health treatment;

(2) Require provider payment for depression screening for certain youth; and

(3) Require provider payment for maternal depression screening for mothers of certain children.

Requires the department of early learning to collaborate with stakeholders to develop an early childhood mental health training and consultation program focused on the provision of trauma-informed care for infants and young children.

Requires educational service districts to establish a lead staff person for mental health.

Requires the office of the superintendent of public instruction to employ a children's mental health services coordinator.

Requires the health workforce council to collect and analyze workforce survey and administrative data for clinicians qualified to provide children's mental health services.

Requires Washington State University to offer one, and the University of Washington to offer one additional, twenty-four month residency position that is approved by the accreditation council for graduate medical education to a resident specializing in child and adolescent psychiatry.

Requires a behavioral health organization to reimburse a provider for a behavioral health service provided to certain covered persons through telemedicine or store and forward technology.