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Karl C. Seman

40 years experience in the Nassau and Suffolk County, New York Courts, practice emphasis in DWI and Vehicular Defenses

Grunwald & Seman, PC

100 GARDEN CITY PLAZA, SUITE 203
Suite 203
GARDEN CITY, NY 11530

Phone: 516-248-8889

Website: gslawyers.com

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About Karl C. Seman

WE ARE AVAILABLE 24/7, ALL ATTORNEYS ARE FORMER PROSECUTORS WITH ALMOST 40 YEARS OF EXPEREICNE IN THE DEFENSE OF ALL VEHICULAR CRIMES. WE PROVIDE FREE CASE REVIEW AND PHONE CONSULTATIONS. CHECK US OUT ON OUR WEB SITE: GSLAWYERS.COM SELECTED AS NY SUPER LAWYER IN AREA OF CRIMINAL AND VEHICULAR DEFENSES

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NCDD Journal

Find the latest news and announcements in our journal.

FROM OUR BLOG

Oral Fluid Testing: Roadside vs. Evidential Analyses

09/02/2025

Written by Ashley M. Hart As cannabis is being decriminalized in many states, there has been increased interest in rapid roadside tests to detect THC and other substances for intoxicated driving charges. A majority of states now have oral fluid testing in some form: roadside (presumptive) or evidential (confirmed in a lab). These states include Alabama, Alaska, Arkansas, Arizona, California, Connecticut,...

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....

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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.