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John P. Calmes

2335 Government St
Baton Rouge, LA 70806

Phone: 225-387-2200

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About John P. Calmes

Graduated from LSU Law School in August 1975. Rated “AV” by Martindale Hubbell. A founding member of “The National College for DUI Defense” (1995). Listed in “Best Lawyers in America” and “Louisiana Super Lawyers”. Past President of “The Louisiana Association of Criminal Defense Lawyers” (2006). Has handled over 2,000 DWI cases. Has spoken at numerous seminars for various organizations about defending DWI cases beginning in 1988. Vietnam Veteran; awarded the Silver Star (1970).

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Virtual Forensic Library

NCDD members have access to a comprehensive forensic library that provides invaluable information to be used when defending clients charged with DUI.

This library includes scientific articles on drug and alcohol intoxication, toxicology and pharmacology, methods of testing for blood alcohol content, field sobriety testing, potential errors that may occur during testing, accident reconstruction, expert testimony, and evidentiary rules. This valuable information can ensure that you provide a high quality defense to clients charged with DUI based on the circumstances of their case and the laws in their state.

Virtual Forensic Library

FROM OUR BLOG

The Disconnect Defense: Defeating a Breath Test Twice the Legal Limit

06/29/2026

By Hunter TzovarrasChair, NCDD Trial Advocacy Task ForceThe Law Office of Hunter J. Tzovarras, Bangor, Maine With assistance from Myranda G. SandbergMember, NCDDNero DUI Defense, S.C., Eau Claire, Wisconsin "It doesn't matter what number the machine prints out if the video shows you walk, talk, and act sober." That is what I tell clients who are sure a high breath test means...

AI in Court Filings: The Ethics Line Between Assistance and Abdication

03/30/2026

By Ryan Katz It is no secret that Artificial Intelligence, or AI, is vastly changing the landscape of many different fields. While the practice of law is certainly not something anybody would want to be taken over by AI in any major way, AI is still a tool which has applications for lawyers. Generative AI can help lawyers brainstorm arguments, organize...

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Benefits of NCDD Membership

Members of the NCDD not only demonstrate that they are qualified DUI defense attorneys, but they have access to valuable information and resources. We provide access to documentation blood alcohol testing devices and scientific articles related to alcohol, drugs, driving, and testing.

We offer training on trial techniques and scientific testing, and we provide access to experts and a comprehensive knowledge base of cases and motions. With all of these resources at your fingertips, you will be able to win more cases

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Membership Plans

Depending on your level of experience, we offer multiple plans for NCDD Membership. Attorneys who have been practicing for less than six years are eligible for a New Attorney membership, while those who have been practicing for over six years can receive a Seasoned Attorney membership. We also offer memberships for Public Defenders.