A DOT medical examiner is the clinician who performs the federal physical and completes the certification paperwork. The examiner must be listed on the FMCSA National Registry of Certified Medical Examiners before performing your exam [1]. Before you choose between 2 clinics, search the examiner's name on the official registry, confirm the listing, and ask which forms the clinic provides. The exam is recorded on MCSA-5875, and a qualified driver receives MCSA-5876, the med card [1].

What does a DOT medical examiner actually do?

The examiner performs the federal medical exam required for interstate commercial motor vehicle drivers. The physical qualification standards are in 49 CFR 391.41, which lists 13 standards covering conditions such as limb impairment, insulin-treated diabetes, cardiovascular disease, respiratory dysfunction, high blood pressure, vision, hearing, drug use, and alcoholism [3].

The visit includes a health history review, blood pressure and pulse, vision testing, hearing testing, a urinalysis dipstick screening specific gravity, protein, blood, and glucose, and a hands-on exam of body systems [5]. That is different from a quick form-only visit. The examiner is making a medical qualification decision against federal standards.

The examiner also completes the Medical Examination Report Form MCSA-5875. If you qualify, the examiner issues Medical Examiner's Certificate Form MCSA-5876, which is the wallet card drivers call the DOT medical card or med card [1].

The examiner's job is not to find a way around a condition. A hands-on exam measures your health against the standards. If a condition needs more review, the examiner may request documentation or certify for less time. That is examiner judgment within the rules, not a fixed card length for every driver [4][5].

How do I verify an examiner before I book?

Use the official FMCSA National Registry search before you put down money or block time in your schedule. Any driver, carrier, or clinic can verify a medical examiner's certification there before booking [2].

Start with the name of the specific examiner who will perform your physical, not only the clinic's name. A clinic can have more than 1 clinician, and the person answering the phone may not be the person who examines you. Ask the clinic for the examiner's full name if the listing is not already shown in the appointment information.

Then search that name in the registry and compare what you find with the clinic's answer. If the examiner is listed, save the search result or record the name for your appointment paperwork. If the clinic will not identify the examiner, pause the booking. If you cannot find the examiner on the official registry, do not treat the appointment as verified.

The registry check does not tell you whether a clinic is convenient, whether the appointment will run on time, or whether you will qualify. It answers the legal examiner-listing question. That is the first check between 2 clinics.

What kinds of clinicians can perform the exam?

The full DOT physical must be performed by a medical examiner listed on the FMCSA National Registry [1]. The facts available here do not provide a complete list of license types that may become certified medical examiners, so a job title alone is not enough. A clinic's label, a general medical license, or a sign advertising DOT physicals does not replace the registry search.

There is a specific rule for vision. A licensed ophthalmologist or optometrist may perform the vision portion of the DOT exam [1]. That does not mean the vision professional is automatically the person who performs the complete physical or issues your MCSA-5876. Ask how the clinic divides the visit.

The clean question is simple: Who is the medical examiner for my appointment, and what is that person's National Registry listing? Then ask whether the same person performs the full exam, including the history, blood pressure, hearing, urinalysis, and hands-on exam.

You may also need outside records. For example, an insulin-treated driver needs the treating clinician who manages and prescribes insulin to complete and sign MCSA-5870. The medical examiner then examines the driver at least annually and no later than 45 days after that clinician signs the form [6]. The treating clinician and the medical examiner are different roles.

What should the clinic give me after the exam?

The visit should produce paperwork that matches the federal process. The examiner records the examination on MCSA-5875. If you qualify, the examiner issues MCSA-5876, the Medical Examiner's Certificate [1]. That is the document you and your carrier refer to as the med card.

Ask the clinic before booking how it handles both forms. A red flag is a front desk that promises only a receipt, an informal note, or a clinic printout without explaining the Medical Examination Report and Medical Examiner's Certificate. Another red flag is a clinic that says the paperwork can be completed without identifying the examiner who will conduct the physical.

The card length is not something a clinic can select from a menu. The maximum certification interval is 24 months, or 2 years, when the driver meets the applicable requirements [4]. Examiners can certify for less when a condition needs monitoring, and the certificate length within the rules is the examiner's clinical judgment [5].

Some standards have their own timing. Drivers certified under the insulin-treated diabetes standard or the alternative vision standard must be examined and certified every 12 months, or 1 year [4]. A driver whose ability to perform normal duties has been impaired by physical or mental injury or disease must be re-examined even when the current certificate has not expired [4].

What medical questions should I settle before choosing?

Choosing a listed examiner does not mean a driver will receive a particular card length. The examiner still applies the physical qualification standards. Under 49 CFR 391.41, the regulation's blood pressure standard says there must be no current clinical diagnosis of high blood pressure likely to interfere with safe CMV operation. The regulation itself contains no numeric blood pressure cutoff [3].

The examiner guidance uses specific blood pressure staging. Below 140/90 can support certification for the full period, up to a 2-year card. A reading of 140-159 systolic or 90-99 diastolic supports a 1-year card. A reading of 160-179 systolic or 100-109 diastolic leads to a one-time 3-month certificate so treatment can start or be adjusted. Readings at or above 180 systolic or 110 diastolic disqualify the driver until blood pressure is controlled [5].

There is no BMI number in 49 CFR 391.41, and the handbook sets no BMI trigger [3][5]. The handbook also sets no sleep apnea screening requirement. Whether sleep testing is needed before certification is examiner judgment under the respiratory standard [5].

If you use insulin, bring the MCSA-5870 from the treating clinician. At least 3 months of electronic blood glucose self-monitoring records can support certification for up to 12 months. Without those records, the certificate can be up to 3 months while the record builds [6].

Here is the registry check to screenshot before you choose between 2 clinics.

Verify before you book

  1. Ask each clinic for the full name of the medical examiner who will perform your exam.
  2. Open the official FMCSA National Registry search.
  3. Search the examiner's name before booking the appointment.
  4. Compare the registry result with the name provided by the clinic.
  5. Confirm that the listed examiner, not an unnamed substitute, will perform the full DOT physical.
  6. Ask whether the clinic completes MCSA-5875 during the exam.
  7. Ask whether a qualified driver receives MCSA-5876, the Medical Examiner's Certificate.
  8. If you use insulin, ask how the clinic handles MCSA-5870 and the 45-day timing rule [6].
  9. Reject the clinic as unverified if nobody on staff can identify a registry-listed examiner.
  10. Keep the registry result, clinic name, appointment details, and forms together for recert paperwork.

What to do next

Written for a driver comparing 2 clinics this week.

  1. Write down the full name of the examiner at clinic 1 and clinic 2.
  2. Run both names through the official National Registry before choosing an appointment [2].
  3. Call the clinic you prefer and confirm that the listed examiner will perform the full physical.
  4. Ask the clinic to confirm MCSA-5875 and MCSA-5876 before you book [1].
  5. Gather your current med card, medication list, glasses, hearing aids, and relevant medical records.
  6. If you use insulin, ask your treating clinician for the signed MCSA-5870 and track the 45-day exam window [6].
  7. Start a home cuff log if blood pressure is a concern, then bring it to the examiner.
  8. Use the DOT physical hub for the exam checklist and related guides.
  9. Compare appointment details with DOT physical near me and CVS MinuteClinic DOT physical, but verify the actual examiner before booking.

Sources

  1. Cornell Law School LII, 49 CFR 391.43, who performs the exam and the required forms, accessed 2026-08-01, https://www.law.cornell.edu/cfr/text/49/391.43
  2. FMCSA National Registry of Certified Medical Examiners, official examiner verification search, accessed 2026-08-01, https://nationalregistry.fmcsa.dot.gov/
  3. Cornell Law School LII, 49 CFR 391.41, physical qualification standards, accessed 2026-08-01, https://www.law.cornell.edu/cfr/text/49/391.41
  4. Cornell Law School LII, 49 CFR 391.45, examination intervals and re-examination requirements, accessed 2026-08-01, https://www.law.cornell.edu/cfr/text/49/391.45
  5. FMCSA Medical Examiner's Handbook, 2024 edition, examiner judgment, exam components, blood pressure staging, and sleep apnea guidance, accessed 2026-08-01, handbook-appendix
  6. Cornell Law School LII, 49 CFR 391.46, insulin-treated diabetes assessment and examination timing, accessed 2026-08-01, https://www.law.cornell.edu/cfr/text/49/391.46