Establishes the Washington state patient safety act.

Requires the department of health to: (1) With stakeholder input, adopt patient assignment limits and recommend quality indicators;

(2) Upon receipt of a complaint, conduct an audit of a hospital's compliance with this act and investigate complaints of violations of this act; and

(3) Maintain, for public inspection, records of civil penalties, administrative actions, or license suspensions or revocations imposed on hospitals.

Requires a hospital to: (1) Submit a staffing plan to the department of health, implement the staffing plan, and assign nursing personnel to each patient care unit in accordance with the plan; and

(2) Regularly collect information regarding nurse staffing and submit it to the department of health.