The medical card is a separate document from your CDL that proves you meet federal health standards to drive a commercial truck or bus
If you hold or want to hold a Commercial Driver's License (CDL), the federal government requires you to carry a medical certificate — often called a medical card — alongside it. This card is not part of your license itself. It is a document issued by a certified medical examiner after you pass a physical exam, and it shows that you meet the health standards set by the Federal Motor Carrier Safety Administration (FMCSA).
The medical card lasts three years from the date the examiner signs it, though some people with certain medical conditions receive shorter validity periods. Without a valid medical card, you cannot legally operate a commercial vehicle, even if your CDL is current. The card must be in your possession while you drive.
Key Takeaways
- You must obtain a medical card from a FMCSA-certified medical examiner before you can use a CDL to drive commercially.
- The exam checks your vision, hearing, blood pressure, and medical history to may support you can safely operate large vehicles.
- Medical cards are valid for three years, but some conditions result in shorter validity periods of one year or less.
- You can find certified examiners through your state's Department of Motor Vehicles or the FMCSA National Registry of Certified Medical Examiners.
- If you have a medical condition that might disqualify you, you may still drive after obtaining a medical variance from the FMCSA.
What the medical exam covers
The exam is standardized across all states and examiners. A certified medical examiner will check your vision (you need at least 20/40 in each eye, corrected or uncorrected), hearing, blood pressure, and reflexes. They will also review your medical history, including any medications you take, past surgeries, and conditions like diabetes, heart disease, or sleep apnea.
The examiner is looking for conditions that could impair your ability to safely drive a large vehicle for long hours. They will ask about seizures, fainting spells, mental health treatment, and substance use. You must be honest on the medical history form — lying or omitting information can result in the card being revoked and your CDL being suspended.
How to find a certified medical examiner
Not every doctor can issue a medical card. The examiner must be listed on the FMCSA National Registry of Certified Medical Examiners, which you can search online at the FMCSA website. You can filter by state and city to find examiners near you. Many are primary care doctors, occupational health clinics, or truck driver health specialists.
You can also contact your state's Department of Motor Vehicles for a list of approved examiners in your area. Call ahead to confirm they are accepting new patients and to ask about their fees, which typically range from $75 to $150, though this varies by location and provider.
What happens if you fail the exam or have a medical condition
If the examiner finds a condition that does not meet federal standards, they will not issue the card. Common reasons for denial include uncontrolled high blood pressure, uncorrected vision problems, or untreated sleep apnea. In some cases, you can address the issue — for example, by getting glasses or starting treatment — and then return for a retest.
If you have a condition that would normally disqualify you but you believe you can still drive safely, you can request a medical variance from the FMCSA. This is a formal process that requires medical documentation and can take several months. Not all variances are granted, but some drivers with well-managed conditions have received them.
Renewing your medical card before it expires
Your medical card is valid for three years from the date the examiner signs it. You should schedule your renewal exam at least 30 days before expiration. If your card expires while you are driving, you are no longer legally permitted to operate a commercial vehicle, even if your CDL itself is still valid.
Some states allow you to renew your CDL and medical card at the same time through the DMV, but the medical exam must still be done by a certified examiner — the DMV cannot conduct it. Check your state's process, as procedures vary.
What to bring to your medical exam
Bring a photo ID, your current CDL or a copy of it, and any medical records relevant to your health history — especially records of past surgeries, hospitalizations, or ongoing treatment. If you take medications, bring a list or the bottles themselves so the examiner can review them. Wear glasses or contact lenses if you normally do, since the exam tests your corrected vision.
Arrive well-rested and do not consume caffeine or other stimulants right before the exam, as they can temporarily raise your blood pressure and affect the results. If your blood pressure is high on the day of the exam, the examiner may ask you to return another day for a retest.
The difference between a medical card and a medical certificate
The terms "medical card" and "medical certificate" are used interchangeably — they refer to the same document. Some people also call it a "DOT medical card" because the Department of Transportation oversees the standards. Regardless of the name, it is the physical card or document the examiner gives you after you pass the exam.
This is separate from your CDL itself. Your CDL is issued by your state's DMV and shows that you have passed the written and driving tests. The medical card shows that you have passed the health exam. Both must be current and in your possession to legally drive a commercial vehicle.
Frequently Asked Questions
Can I drive a commercial vehicle while waiting for my medical card appointment?
No. You cannot legally operate a commercial vehicle without a valid medical card, even if you have a CDL. You must have the card before you start driving commercially. If you are waiting for an appointment, you cannot work as a commercial driver until the exam is completed and the card is issued.
What if I have diabetes or high blood pressure?
These conditions do not automatically disqualify you. The examiner will evaluate how well your condition is controlled through medication or lifestyle changes. If your blood pressure or blood sugar is stable and you are following treatment, you may still receive a medical card. Be honest about your condition and your treatment plan.
How long does it take to get a medical card after the exam?
The examiner typically issues the card on the same day you pass the exam. You should receive the physical card before you leave the office. If the examiner needs to review your case further or requests additional medical records, it may take a few days, but this is uncommon.
Do I need a new medical card if I move to a different state?
No. Your medical card is valid in all states as long as it is current. You do not need to retake the exam or get a new card when you move or change jobs. However, you will need to update your CDL address with your new state's DMV.
What should I do if my medical card is lost or damaged?
Contact the medical examiner who issued it and ask for a replacement. They can issue a duplicate card, usually at no cost or for a small fee. In the meantime, you should not drive commercially without the card, as you are required to carry it while operating a commercial vehicle.