No doctor in the United States can prescribe cannabis, because marijuana is still a Schedule I controlled substance under federal law. Instead, a licensed clinician certifies or recommends that you qualify for your state's medical cannabis program. That signed certification is the document you submit to get a state medical marijuana card, which then allows you to buy cannabis from a licensed dispensary.
Why Do Doctors Certify Instead of Prescribe?
A standard prescription is a federally regulated document, and Schedule I drugs cannot be prescribed. Writing one for cannabis would conflict with federal law and put a clinician's DEA registration at risk.
States worked around this by creating a separate certification pathway that runs entirely under state law. The clinician documents that you have a qualifying condition and that the potential benefits outweigh the risks for you.
Who Can Certify You for Medical Cannabis?
Eligibility varies by state, but the list is usually narrow and specific.
- Physicians (MD or DO) licensed in your state
- Nurse practitioners and physician assistants in some states
- Naturopathic doctors in a smaller number of states
- Clinicians who completed the state's required registration or continuing education
Your primary care doctor may be legally able to certify you, but many choose not to because of employer policy, insurance contracts, or federal employment rules.
What Happens at a Certification Appointment?
The visit looks like a focused medical evaluation rather than a sales pitch. Most appointments run 15 to 30 minutes and many states allow telehealth.
- Review of your medical history, current medications, and prior records
- Discussion of your diagnosis and whether it appears on the state qualifying list
- Explanation of risks, side effects, dosing, and drug interactions
- Completion of the state certification form or entry into the state registry
You typically leave with a certification number or a printed form, not a prescription bottle.
Which Conditions Usually Qualify?
Common qualifying conditions include chronic pain, PTSD, cancer, epilepsy, multiple sclerosis, Crohn's disease, glaucoma, and terminal illness. Some states accept a much narrower list, and a few allow any condition where a clinician sees a benefit.
Is Medical Cannabis the Same as CBD?
No. Hemp-derived CBD with no more than 0.3% THC is legal federally and does not require a card, a certification, or a doctor's visit. Medical cannabis products are high-THC and remain illegal at the federal level, which is why the state program exists.
If you are only exploring CBD, you can buy it online from a lab-tested supplier without involving a certifying clinician.
What Does a Certification Cost and How Long Does It Last?
Evaluation fees generally run from about $75 to $300 depending on the state and clinic. State card or registry fees are separate and often lower for veterans or people on public assistance.
Certifications usually last one year, and you must renew before the expiration date to keep dispensary access.
Frequently Asked Questions
Can my regular doctor write a cannabis recommendation?
Possibly. It depends on state law and whether that practice is willing to participate. Many patients use a dedicated certification clinic instead.
Do I need a medical card to buy CBD?
No. Federally legal hemp CBD requires no certification, no state registry, and no doctor's appointment.
Is a cannabis certification the same as a prescription?
No. A certification is a state-level authorization, and it does not create a federal prescription or obligate a pharmacy to fill anything.
Can a certifying doctor guarantee my application will be approved?
No. The state reviews the application, and approval depends on residency, documentation, and whether your condition qualifies under that state's rules.