Changes the name of the Washington state medical use of cannabis act to the Washington state medical use of marijuana act.

Establishes qualifying patient recognition cards and designated provider recognition cards.

Requires the department of health to: (1) Establish and maintain a system for safeguarding the records of qualifying patients and designated providers that have applied for a recognition card; and

(2) Convene a work group to develop practice guidelines for health care professionals to consider when authorizing the medical use of marijuana for patients.