Most interstate commercial drivers who are subject to federal physical qualification rules must be examined by a medical examiner listed on FMCSA's National Registry. A DOT physical may result in certification for up to 24 months, but the examiner can issue a shorter period when a condition needs closer monitoring.
Who generally needs medical certification?
Interstate drivers operating commercial motor vehicles covered by 49 CFR Part 391 generally need medical qualification. Intrastate rules and exceptions are controlled by the licensing state, so a driver who never crosses state lines should still check the state driver licensing agency. Self-certification category also matters: interstate non-excepted, interstate excepted, intrastate non-excepted, and intrastate excepted drivers can have different documentation requirements.
What changed with National Registry II?
Beginning June 23, 2025, certified medical examiners generally began submitting CDL and CLP examination results electronically to the National Registry. FMCSA then transmits the information to the driver's state licensing agency. In compliant states, CDL holders usually no longer submit the paper MCSA-5876 certificate themselves.
There is an important exception: FMCSA has published temporary instructions for states that have not fully implemented the electronic process. Drivers licensed in one of those states may still receive and submit a paper certificate. Check the current FMCSA National Registry II guidance and your state agency instead of assuming the process is identical nationwide.
What the DOT physical covers
The examiner reviews medical history and evaluates areas relevant to safe commercial driving, including vision, hearing, blood pressure, cardiovascular health, respiratory health, neurological function, limb function, and medication use. Bring a current medication list, corrective lenses or hearing devices you use, and relevant records requested by the examiner.
How long is a DOT medical card valid?
- Maximum federal period: up to 24 months.
- Shorter certification: an examiner may choose a shorter period to monitor a condition.
- Expiration: do not drive a CMV that requires medical qualification after the certification expires.
- State record: verify that the new result appears before relying on it for dispatch.
Renewal checklist
- Schedule early enough to resolve a missing record or request for additional documentation.
- Use the National Registry to confirm that the examiner is currently certified.
- Ask whether your state still needs a paper copy.
- Check the state CDL record after the examination result is transmitted.
- Keep the driver's copy of the examination report and any paper certificate you receive.
- Notify the employer according to its qualification-file procedure.
What happens when certification expires?
States must update the CDL record when a driver is no longer medically certified and may downgrade commercial driving privileges under federal and state procedures. Restoring the record can take longer than completing a physical, so waiting until the final day creates avoidable risk. If a record appears wrong, contact the state agency and the medical examiner promptly.
Drivers preparing for their first license can use this checklist with our step-by-step CDL guide. Medical qualification is only one part of licensing; ELDT, state knowledge tests, the CLP period, and the skills test still apply.