How to Get a Medical Marijuana Card in California

To get a medical marijuana card in California, you need a written recommendation from a California-licensed physician, and then you apply through the health department in the county where you live using CDPH form 9042, a government-issued photo ID, proof of residency, and the county’s fee. The card, officially called the Medical Marijuana Identification Card (MMIC), is administered by the California Department of Public Health and issued at the county level. Below is what each step involves, what it costs, and how long it takes.

Check Whether You Have a Qualifying Condition

Before paying for a consultation, confirm your condition is one a California physician can recommend cannabis for. The named qualifying conditions are AIDS, anorexia, arthritis, cachexia, cancer, chronic pain, glaucoma, migraine, persistent muscle spasms (including those associated with multiple sclerosis), seizures (including epileptic seizures), and severe nausea.

The list is not closed. Any chronic or persistent symptom that substantially limits your ability to perform major life activities under the Americans with Disabilities Act, or that could cause serious harm to your health or safety if left untreated, can also qualify.¹ That language gives physicians discretion, and conditions like PTSD, insomnia, and inflammatory bowel disease commonly qualify even though they aren’t named.

Get a Physician’s Recommendation

You need written documentation from a California-licensed physician confirming that medical cannabis is appropriate for your condition. This is a recommendation, not a prescription, because cannabis remains a Schedule I substance under federal law.²

During the visit, the physician reviews your medical history and discusses your symptoms. Many providers offer telemedicine appointments. Expect to pay between $100 and $300 out of pocket; insurance does not cover these consultations. The physician may use the standardized CDPH 9044 form or provide their own written documentation.³

The recommendation typically stays valid for one year. If it expires before you finish applying or renewing, you’ll need a new consultation.

Gather Your Documents

Before going to the county office, put together:

A government-issued photo ID such as a California driver’s license or state ID card. For minors without photo ID, a certified copy of a birth certificate is accepted.¹
Proof of residency in the county where you’re applying: a current utility bill, rental or mortgage agreement, or vehicle registration showing your name and physical address.
The written recommendation from your physician.
Completed CDPH form 9042, available on the CDPH website or at your county health department.
A photo. Some counties take it at the office; others accept an electronic photo. Check with your county before you go.

You must apply in the county where you live. If your address is in Los Angeles County, you apply through LA County; you cannot pick a different county.

Apply at Your County Health Department

Applications go to your county health department, not directly to the state. Submission methods vary. Some counties take walk-ins, others require appointments, and some offer mail-in or online options. The CDPH keeps a full list of county program locations and hours.⁴

Fees are set by the county and capped at $100. San Diego County charges $44 at the low end; San Luis Obispo charges $100 at the high end.⁵⁶ Medi-Cal beneficiaries pay half the regular fee; bring your Benefit Identification Card. Fees are non-refundable even if your application is denied.

Wait for Processing and Pick Up the Card

Once your application is complete, the county has up to 30 days to verify it and another five days to make the card available, for a maximum of 35 days.¹ Many counties process faster than that in practice. The card is either mailed or made available for pickup, depending on local procedure.

Each MMIC is valid for up to one year from the date of issue and carries a unique identification number that dispensaries and law enforcement can verify through the CDPH’s online system.

Renewing the Card

Renewal follows the same process: CDPH 9042 form, proof of ID and residency, physician’s recommendation, and the county fee. If your recommendation is still valid, you can reuse it. If it has expired, you’ll need a new consultation.¹ The tax exemption and higher possession limits only apply while the card is current, so don’t let it lapse if you use those benefits.

Applications for Minors and Caregivers

Patients under 18 can apply, but the county program will contact the minor’s parent, legal guardian, or the adult with legal authority to make medical decisions for them.¹ The minor also needs a designated adult caregiver.

A primary caregiver is someone who has consistently taken responsibility for a patient’s housing, health, or safety. A friend who occasionally picks up cannabis for you does not qualify; California guidance emphasizes a genuine ongoing care relationship.⁷ Caregivers apply for their own MMIC through the same county process and may serve more than one patient, provided all parties live in the same city or county. Caregivers can receive reimbursement for actual expenses and reasonable compensation.

What the Card Gets You

Because recreational cannabis is legal in California for adults 21 and older, some patients skip the MMIC entirely. The card is worth getting if any of these apply:

Sales tax exemption. MMIC holders pay no state or local sales tax on medical cannabis. Depending on the county, that’s roughly a 7.25% to 10.75% savings on each purchase. You still pay the 15% cannabis excise tax that took effect October 1, 2025. To get the exemption, you have to present the MMIC itself along with a government-issued ID; a physician’s recommendation alone does not qualify.⁸⁹
Higher possession limits. With an MMIC you can possess up to eight ounces of dried cannabis and maintain six mature or twelve immature plants. Recreational limits are 28.5 grams of flower and 8 grams of concentrate.¹⁰¹¹
Cultivation flexibility. A physician can recommend more than six mature plants if the patient’s condition warrants it.¹²
Access for 18- to 20-year-olds. Recreational purchases require age 21. Medical patients as young as 18, or younger with a caregiver, can access dispensaries with a valid recommendation or MMIC.

Federal Limits to Know Before You Apply

Your MMIC is valid under California law, but cannabis is still a Schedule I substance federally. As of late 2025, a proposed rule to move it to Schedule III was awaiting an administrative law hearing with no final action taken.² Three consequences follow directly from holding a card:

Firearms. Federal law prohibits any user of a controlled substance from possessing firearms or ammunition.¹³ The ATF has said this applies to medical marijuana patients regardless of state law. If you hold an MMIC and try to buy a gun, you must answer “yes” on ATF Form 4473 when asked whether you are an unlawful user of a controlled substance, and the dealer cannot complete the sale.¹⁴ Possessing firearms you already own while using medical cannabis also violates federal law.

Federally subsidized housing. If you live in public housing or receive Section 8 assistance, medical cannabis use can be grounds for eviction or denial of admission. HUD’s position is that marijuana users, including state-authorized medical patients, are prohibited from HUD-assisted housing programs under the Quality Housing and Work Responsibility Act.¹⁵ Private landlords not participating in federal housing programs are not bound by this rule.

Air travel. TSA officers don’t actively search for cannabis, but if they find it during screening they are required to refer it to law enforcement. Cannabis products with more than 0.3% THC remain illegal federally for air travel, including flights between two California airports.¹⁶ Hemp-derived CBD products with 0.3% THC or less are allowed.

1
California Department of Public Health. Medical Marijuana Identification Card Program – FAQs
2
The White House. Increasing Medical Marijuana and Cannabidiol Research
3
SF.gov. Medical Marijuana Program Application/Renewal Instructions
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California Department of Public Health. Medical Marijuana Identification Card Program – County Program Locations and Hours
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San Diego County. Frequently Asked Questions About a Medical Marijuana Identification Card
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San Luis Obispo County. Medical Marijuana ID Card (MMIC)
7
California Department of Justice. Guidelines for the Security and Non-Diversion of Marijuana Grown for Medical Use
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California Department of Tax and Fee Administration. Cannabis Retailers with Cannabis Businesses
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California Department of Tax and Fee Administration. New Cannabis Excise Tax Rate Effective October 1, 2025
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California Legislative Information. California Health and Safety Code 11362.77
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California Courts. Proposition 64: The Adult Use of Marijuana Act
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Department of Cannabis Control. What’s Legal
13
Office of the Law Revision Counsel. 18 U.S. Code 922 – Unlawful Acts
14
Bureau of Alcohol, Tobacco, Firearms and Explosives. Open Letter to All Federal Firearms Licensees Regarding Medical Marijuana Use
15
HUD Exchange. Can a Public Housing Agency (PHA) Make a Reasonable Accommodation for Medical Marijuana
16
Transportation Security Administration. Medical Marijuana