Due to COVID-19, HCA’s lobby is closed. Learn more about HCA's customer service options during the pandemic.

Contact us

Stay up-to-date on HTA assessments.

Join our email notification list.

Phone: 360-725-5126

Email: shtap@hca.wa.gov

TRS users

Dial 711 through the Washington Relay service.

Mailing address

P.O. Box 42712
Olympia, WA 98504-2712