Mark N. Weingart

Mark N. Weingart

4500 S. Lakeshore Dr.
Suite 550
Tempe, AZ 85282

Phone: 480-897-8737

Website: arizonaduilaw.com

Founding Member

About Mark N. Weingart

Mr. Weingart has been practicing law for over 35 years. He is a former assistant county prosecuting attorney in the State of Ohio, where he prosecuted in excess of 100 D.U.I. cases. When he came to Arizona in 1979, he was appointed as a city court judge in the City of Tempe, where he presided over D.U.I. cases. He worked full and part-time in that capacity as a judge from 1979 until 1986. Also for a six-year period, he served as an Assistant Attorney General for the State of Arizona. Additionally, Mr. Weingart has participated as a seminar lecturer, both locally and nationally, on D.U.I. defense techniques. Mr. Weingart is frequently consulted by the media as a legal expert on D.U.I. and other vehicular crime-related issues and has appeared on both local radio and television news. Mr. Weingart is a Founding Member of the National College for D.U.I. Defense, member of the Maricopa County, Ohio State and American Bar Associations, State Bar of Arizona, Association of Trial Lawyers of America, American Judicature Society and Arizona Attorneys for Criminal Justice and has been certified by the Arizona State Bar Association as a Criminal Law Specialist.


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vflVirtual Forensic Library

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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.

FROM OUR BLOG

Interview With an Amicus

06/27/2025

Written by Michelle L. Behan Amicus Curiae (Latin for "Friend of the Court") refers to a brief that is filed by an interested, non-party to the matter under consideration. This is often done in cases where organizations and entities wish to provide the reviewing court with their point of view, be it social or public policy implications, or special interest agendas....

Keeping FSTs Out of a Trial

04/23/2025

Written by Neil Halttunen I want to address a common issue that DWI practitioners are facing, trying to keep FSTs out of a trial. One way is to take the position that FSTs are scientific evidence and make the prosecutor lay scientific foundation which they rarely can do. The HGN test was the result of several studies. See Generally Session 8 of...

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