7 things to know about California's medical marijuana program

California was the first state to legalize medical marijuana, through Proposition 215 in 1996. A physician's recommendation documented in the patient's medical records is enough for legal protection. The state ID card (MMIC) is voluntary. The California Department of Public Health keeps the statewide card system and verification site, but patients apply in person at the health department in their county, which sets the fee. The main practical benefit of the card is that holders don't pay sales and use tax on medical cannabis at licensed retailers. Adult-use cannabis has been legal since 2016.

7 things to know

1. The state card is voluntary; a documented physician recommendation alone gives medical protection.
2. Patients apply at their county health department, not through a doctor or evaluation center.
3. Counties may charge up to $100, with half off for Medi-Cal members.
4. Showing a state MMIC exempts the purchase from sales and use tax.
5. Patients may possess 8 ounces and keep 6 mature or 12 immature plants.
6. The card is valid statewide for up to one year.
7. California does not recognize medical cards from other states.

At a glance

• State fee: Set by each county, up to $100 (50% off (max $50) for Medi-Cal beneficiaries; waived for indigent patients enrolled in the County Medical Services Program)
• Card lasts: Up to 1 year
• Processing: County has 30 days to verify and 5 more days to issue the card; up to 35 days total for a complete application
• Patient limit: 8 ounces of dried marijuana per patient
• Home grow: 6 mature or 12 immature plants per patient
• Recreational sales: Legal for adults 21+
• First visit online: Yes

Sources

• CDPH - Medical Marijuana Identification Card Program
• CDPH - MMICP Frequently Asked Questions
• Medical Board of California - Guidelines for the Recommendation of Cannabis for Medical Purposes

This guide is general information, not medical or legal advice. Laws change — confirm details with your state agency. State facts last checked October 7, 2026.