A Positive Alternative
4649 Sunnyside Avenue North, Seattle, WA 98103
Therapeutic Health Services, Seneca Branch
Address: 1305 Seneca St., Seattle, WA 98101 · Map
Phone: (206) 726-4100
Before you call
- Have your insurance or Medicaid card ready and ask whether the facility is in network.
- Ask how soon they can do an assessment and whether there is a waitlist.
- Confirm the facility is licensed by Washington.
- If you are withdrawing from alcohol or benzodiazepines, ask about medical detox; do not stop suddenly on your own.
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Last reviewed 2026-10-06. Facility details come from SAMHSA's FindTreatment.gov locator and facility-provided information. Confirm services, availability and payment directly with the facility.