CDL DOT Medical

What is a DOT medical exam

It is an exam that indicates an individual is physically qualified to operate a commercial motor vehicle in accordance with 49 CFR 391.41, Subpart E - Physical Qualifications and Examinations.

Where can I get a DOT medical exam

Click  to find a FMCSA Certified Medical Examiner in your area.

What happens if my exam expires

You are no longer medically qualified to operate a commercial vehicle and your CDL is subject to cancellation. You must keep your DOT medical up-to-date (new exam every 2 years). If you do not have a current DOT medical, you will be required to downgrade your CDL to a regular license.

Where/how do I submit my DOT medical information

  1. You may submit it  or
  2. You may bring it to any driver license office or
  3. You may fax it to 303-205-5709 or
  4. You may scan and e-mail to or
  5. You may mail it to:
Colorado Department of Revenue
Attn:  CDL Unit
PO Box 173350
Denver CO 80217-3350

Medical conditions that may disqualify you from holding a CDL

  • Poor vision
  • Diabetes requiring insulin
  • Seizures
  • Heart problems
  • Respiratory issues
  • Alcohol abuse
  • Drug use, including marijuana
Many medical conditions, on a case-by-case basis, may disqualify you from holding a CDL.  Some common issues are listed above, however each individual needs to check with their medical provider for a final decision.
For additional information, call 303-205-5600 or email