Washington State Therapist Billing Guide

Washington State has a large, well-educated therapy consumer base concentrated in Seattle and its eastside suburbs, alongside a vast rural territory with significant therapist shortages. Understanding DOH licensing, Premera and Regence's market dominance, and Washington's telehealth landscape is key for WA therapists practicing OON.

Overview

Washington State therapists can build strong out-of-network practices, particularly in the Seattle metro, where demand for mental health services is high and incomes support private-pay rates. Providing clients with accurate superbills is essential for helping them access their OON insurance benefits efficiently.

Washington State Licensing (DOH)

Mental health professionals in Washington are licensed by the Washington State Department of Health (DOH), Behavioral Health division. License types relevant to OON billing:

• LICSW — Licensed Independent Clinical Social Worker
• LASW — Licensed Advanced Social Worker (supervised; limited independent billing)
• LMHC — Licensed Mental Health Counselor
• LMFT — Licensed Marriage and Family Therapist
• Licensed Psychologist — Doctoral level
• Mental Health Counselor Associate — Supervised level; limited independent billing

Washington's "Independent" social work license is the LICSW, similar to Massachusetts. Your DOH license number, NPI, and taxonomy code must be accurate on every superbill you issue.

Washington Insurance Landscape

Washington State's commercial insurance market is anchored by two major regional carriers:

• Premera Blue Cross — One of the two largest commercial payers in WA, primarily serving employer-sponsored plans in the Puget Sound region and eastern Washington. PPO plans have OON mental health benefits; clients submit superbills via premera.com or by mail. Processing typically takes 3–6 weeks.
• Regence BlueShield — Major payer serving western and central Washington, including the Seattle metro. PPO plans include OON mental health benefits; clients submit through regence.com.
• Kaiser Permanente Washington — Significant HMO presence in the Seattle/Puget Sound area. Kaiser plans generally have no OON mental health benefit. Clients on Kaiser plans typically cannot submit superbills unless a single case agreement is in place.
• UnitedHealthcare — Present in large employer plans. Standard OON PPO benefits; clients submit via myuhc.com.
• Aetna — Smaller market share; present in some employer-sponsored plans. OON PPO benefits available.
• Washington Apple Health (Medicaid) — Does not offer OON psychotherapy benefits. Apple Health managed care clients cannot submit superbills.

Seattle Market Specifics

Seattle and the Eastside (Bellevue, Kirkland, Redmond) have some of the highest private-pay therapy rates in the Pacific Northwest, driven by the tech industry workforce:

• Tech employer plans (Amazon, Microsoft, Google) typically offer generous PPO benefits with lower OON deductibles than typical commercial plans
• Demand is especially high for evidence-based approaches: CBT, DBT, and EMDR are commonly sought by Seattle-area clients
• Many Seattle therapists operate fully OON at rates of $200–$350 per session with strong referral pipelines from Psychology Today and word of mouth

Telehealth Rules

Washington State enacted telehealth parity law (SB 5385 and subsequent legislation) requiring commercial insurers to reimburse telehealth mental health services at parity with in-person care. Key billing points:

• Use Place of Service 10 for telehealth sessions where the client is at home
• Washington has rural telehealth originating site requirements that do not apply to OON superbill clients — POS 10 is appropriate for home-based telehealth
• Washington participates in the PSYPACT interstate compact for psychologists

Refer to our telehealth billing guide for details on modifiers and documentation.

Reimbursement Rates

Estimated OON reimbursement for CPT 90837 in Washington State:

• Seattle / Bellevue / Redmond: Private pay $200–$350; OON reimburse ~$90–$155
• Tacoma / Olympia: Private pay $160–$250; OON reimburse ~$75–$120
• Spokane: Private pay $130–$200; OON reimburse ~$60–$100
• Eastern WA / Rural areas: Private pay $110–$170; OON reimburse ~$50–$90

Tips for Washington State Therapists

• Know your tech-company plan benefits. Amazon, Microsoft, and Google employees typically have plans through Premera or Regence with generous OON benefits. These clients often have low OON deductibles and high OON reimbursement percentages — worth clarifying at intake.
• Identify Kaiser clients early. Kaiser's HMO presence in Seattle is substantial. Asking about insurance plan type upfront prevents billing surprises.
• Washington parity rights. Washington follows federal MHPAEA parity requirements. Clients who believe their plan is applying stricter mental health limits than medical limits can file a complaint with the Washington State Office of the Insurance Commissioner.

Generate Your Washington State Superbill

Superbilled makes superbill generation fast and compliant for Washington-licensed therapists. Visit our Washington State superbill generator to set up your practice profile today.