Preserves patient privacy and contains health care costs by providing greater protection for patient specific health information than is currently provided by federal law.

Prohibits health care providers, including pharmacies and entities licensed under chapter 18.64 RCW; health carriers; pharmacy benefit managers; or the business associates, subsidiaries, or affiliates of the aforementioned entities from intentionally sharing, selling, or otherwise using any health care information for the purpose of marketing prescription drugs to patients, notwithstanding allowable disclosures under RCW 70.02.050, and unless expressly authorized by the patient as provided in RCW 70.02.030.