The goal of the Patient ID Center (PIDC) formally known as Oakland Cannabis Buyers' Cooperative (OCBC) is to provide seriously ill patients with a safe and reliable source of medical cannabis information and patient support. Our cooperative is open to all patients with a verifiable letter of recommendation for medical cannabis, used to alleviate or terminate the effects of their illnesses. The PIDC is currently unable to dispense medical cannabis due to local contracts to issue secure photo ID cards