The Weingart Law Firm office is located in Tempe, AZ, and is led by 35-year attorney Mark N. Weingart. Founded in 1988, the Weingart Law Firm was one of the first law firms to concentrate on DUI representation, although the practice also has comprehensive experience in criminal justice. We’re available 24 hours a day, seven days a week, and we work endlessly to achieve a favorable result on your criminal charge.