What a medical card is and why you need one

A medical certificate (often called a medical card or DOT medical card) is a document that proves you are physically able to operate a commercial vehicle safely. The Federal Motor Carrier Safety Administration (FMCSA) requires anyone holding a Commercial Driver's License (CDL) to carry this certificate while driving.

You cannot legally drive a commercial vehicle without a valid medical certificate in your possession. Law enforcement can stop you and cite you for operating without one, and your employer can suspend you from driving duties. The certificate is separate from your CDL itself — you keep both documents.

The medical certificate lasts either one or two years, depending on what the examining doctor finds during your physical exam. Most people receive a one-year certificate if they have certain medical conditions (like diabetes or high blood pressure) and a two-year certificate if they have no reportable conditions.

Key Takeaways

  • You must have a valid medical certificate to legally operate any commercial vehicle, and you must carry it with you while driving.
  • The exam must be performed by a FMCSA-certified medical examiner, not your regular doctor, and covers vision, hearing, blood pressure, and certain medical conditions.
  • The certificate lasts one or two years depending on your health status, and you must renew it before it expires or you cannot drive commercially.
  • You can find certified examiners through the FMCSA National Registry, and the exam typically costs between $75 and $150.
  • Some medical conditions require you to report to the FMCSA before you can be examined, and failing to disclose conditions can result in fines or license suspension.

Finding an FMCSA-certified medical examiner

Your regular doctor cannot issue a medical certificate, even if they know your health history well. The exam must be performed by a doctor, nurse practitioner, or physician assistant who is listed on the FMCSA National Registry of Certified Medical Examiners.

You can search for examiners on the FMCSA website at fmcsa.dot.gov. The site has a searchable database where you enter your state and city to find certified examiners near you. Many are located in urgent care clinics, occupational health centers, or private medical offices. Some truck driving schools also have examiners on staff or can refer you to one.

Call ahead to confirm the examiner is currently certified and accepting new patients. Some examiners have long wait times, especially in rural areas, so plan ahead if your certificate is expiring soon. Ask about the cost upfront — fees vary by location but typically range from $75 to $150.

What happens during the medical exam

The exam takes 30 to 60 minutes and covers basic physical and mental fitness to drive. The examiner will check your vision (you need at least 20/40 in each eye with or without correction), hearing, blood pressure, and reflexes. They will also ask about your medical history, current medications, and any conditions that might affect your ability to drive safely.

Bring your current CDL, a list of all medications you take, and any medical records related to conditions the examiner asks about. If you wear glasses or contacts, bring them. The examiner will ask detailed questions about sleep apnea, diabetes, heart disease, seizures, mental health treatment, and substance use — answer honestly, because lying on the form is a federal offense.

The examiner will also test your ability to perform certain movements, like touching your toes and standing on one leg, to check for balance and coordination problems. If you have a condition that might affect your driving, the examiner may request additional testing or medical records from your regular doctor before making a decision.

Medical conditions that require reporting to the FMCSA

Certain conditions must be reported to the FMCSA before you can even be examined for a medical certificate. These are called listed medical conditions, and they include insulin-treated diabetes, seizure disorders, sleep apnea, heart disease, and some psychiatric conditions. If you have one of these conditions, you cannot straightforward show up at an examiner's office — you must first obtain a FMCSA waiver or exemption.

The process varies by condition. For example, if you use insulin for diabetes, you must request a waiver from the FMCSA before an examiner will see you. The FMCSA will review your medical records and may require you to meet certain safety standards (like regular blood sugar monitoring) before granting the waiver. This process can take several weeks.

If you have a listed condition and attempt to get a medical certificate without first obtaining a waiver, the examiner will refuse to examine you and will report you to the FMCSA. You can find the complete list of listed medical conditions and waiver instructions on the FMCSA website. If you are unsure whether your condition requires a waiver, contact the FMCSA Medical Certification Division at 1-202-366-4001.

Renewing your medical certificate before it expires

Your medical certificate has an expiration date printed on it. You must renew it before that date or you cannot legally drive commercially. Unlike your CDL, which you renew at your state's DMV, you renew your medical certificate by scheduling another exam with a certified examiner.

Start looking for an examiner at least 30 days before your certificate expires. If you wait until the last week, you may not be able to find an available appointment, and you will be unable to work until you have a new certificate. Some employers require drivers to renew their certificates before they expire, so check your company's policy.

Bring the same documents you brought to your first exam: your current CDL, a list of medications, and any medical records related to conditions the examiner asks about. The renewal exam is the same as the initial exam — the examiner will check your vision, hearing, blood pressure, and medical history again.

What happens if your medical certificate is denied or expires

If the examiner finds a condition that makes you unsafe to drive commercially, they will deny your medical certificate. You will receive a written explanation of why you were denied. Some denials are temporary — for example, if your blood pressure is too high, you may be able to reapply after treating it with medication and waiting a few weeks.

Other denials are permanent unless you obtain a waiver from the FMCSA. If you are denied, ask the examiner what steps you can take to address the issue. Some examiners will tell you to see your regular doctor for treatment and then return for another exam after a certain period.

If your certificate expires while you are waiting for a renewal exam, you cannot legally drive a commercial vehicle. Driving with an expired medical certificate is a violation that can result in fines, out-of-service orders, and suspension of your CDL. If you are employed as a driver, your employer must take you off commercial driving duties when ready.

Keeping your medical certificate valid while driving

Once you have your medical certificate, keep it with you whenever you drive commercially. Law enforcement can request to see it during a traffic stop, and you must produce it on demand. Carry it in your wallet or in your vehicle in a safe place where you can access it quickly.

If your medical certificate is lost or damaged, contact a certified examiner and request a replacement. Some examiners can issue a replacement on the spot; others may need to schedule you for a brief follow-up visit. Do not drive commercially without a valid certificate while waiting for a replacement.

If your health changes between exams — for example, you develop a new condition or start taking a medication that affects your ability to drive — you should report it to your employer and consider scheduling an early exam. Some conditions that develop after your exam may disqualify you from driving, and continuing to drive while knowing you have a disqualifying condition is illegal.

Frequently Asked Questions

Can my regular doctor perform my medical exam for a CDL?

No. Your exam must be performed by a doctor, nurse practitioner, or physician assistant listed on the FMCSA National Registry of Certified Medical Examiners. You can search for certified examiners on the FMCSA website by state and city. Your regular doctor can help you manage any medical conditions that come up during the exam, but they cannot issue the medical certificate itself.

How long does a medical certificate last?

A medical certificate lasts either one or two years. If you have no reportable medical conditions, you typically receive a two-year certificate. If you have certain conditions like diabetes, high blood pressure, or sleep apnea, you receive a one-year certificate. The examiner will tell you the expiration date when they issue your certificate.

What if I have a medical condition like diabetes or high blood pressure?

Some conditions require you to obtain an FMCSA waiver or exemption before you can be examined. Others do not require a waiver but will result in a one-year certificate instead of two years. The FMCSA website lists which conditions require waivers. If you have a listed condition, contact the FMCSA Medical Certification Division before scheduling an exam.

What happens if my medical certificate expires while I am waiting for a renewal exam?

You cannot legally drive a commercial vehicle with an expired medical certificate. If you are employed as a driver, your employer must remove you from driving duties when ready. Schedule your renewal exam at least 30 days before your certificate expires to avoid this situation.

Can I drive commercially if my medical certificate is denied?

No. If your medical certificate is denied, you cannot legally operate a commercial vehicle until you obtain a valid certificate. Some denials are temporary and can be resolved by treating an underlying condition and reapplying. Others may require an FMCSA waiver. Ask the examiner what steps you can take to address the reason for the denial.