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Gregory Grizopoulos is a founding partner of Grizopoulos & Portz, P.C. He aggressively represents individuals who are arrested and charged with crimes and also represents those who are injured due to the negligence of others.
In August 2002, Gregory was appointed Assistant District Attorney by the Honorable Denis Dillon, District Attorney of Nassau County. He also received a special appointment to be Nassau County's Stop-DWI Special Prosecutor and was assigned the responsibility of prosecuting serious, high-profile, media sensitive Driving While Intoxicated (DWI) and related vehicular cases. He received training from police officers and national training in the areas of Alcohol Breath Testing and Highway Safety, Standarized Field Sobriety Tests (SFSTs) and Accident Reconstruction with the New York City Police Department's Accident Investigation Unit. He has also lectured at the Nassau County Police Academy about how to cross examine a police witness.
In addition to handling major felony cases, Gregory was assigned to the elite Vehicular Crimes Unit under D.A. Kathleen Rice where he handled felony DWI offenses involving serious injury.
Prior to joining the District Attorney's Office, Gregory worked as a law clerk at the prestigious criminal defense firm of Eoannou & Lana in the City of Buffalo, New York. There he assisted in both federal and state defense cases including the successful defense of country music stars Tim McGraw and Kenny Chesney.
In 2006, Gregory entered private practice specializing in the areas of personal injury, criminal defense and DWI-Vehicular crimes defense. Since that time Gregory has developed a reputation for excellence as a trial attorney and skilled advocate.
Gregory has been quoted by the media in his representation of clients in high profile cases including Fox 5 News, News 12 Long Island, Newsday, the New York Post and the New York Daily News. Gregory is a member in good standing of the Nassau County Bar Association, Former District Attorneys Association and the Nassau County Criminal Courts Bar Association. He is admitted to practice law in the State of New York and the United States District Courts of the Eastern and Southern Districts.
3
Practice Areas
20 years
20 years
20 years
Free Consultation
$0 first 60 minutes
Always
State: New York
Acquired: 2003
No misconduct found
Fax
The Benchmark Building, 170 Old Country Rd Ste 502, Mineola, NY, 11501
gpnylaw.com/
Other places you can find Gregory online.
Showing 1 - 5 of 10 client reviews from Avvo
Posted by Kirk | May 6, 2021 | Hired Attorney
Greg Grizopoulos did a outstanding job handling my case he is very thorough and he is a outstanding attorney I highly recommend him
Posted by Keri-Anne | June 7, 2019 | Hired Attorney
Greg cares about the facts of the cases. As an activist the police in Nassau County have made a target of me. TWICE I have been the victim and had to fight TWO bad cases we won at one trial and now another is being dismissed. Greg handled my warrant when I missed a date while on the West Coast and ha...
Posted by Gina | May 20, 2017 | Hired Attorney
I just wanted to take the time and speak on my experience with Greg Grizopoulos. I was extremely impressed by the way greg and his team handled my case (s). I have used greg in the past for a Aggrivated DWI, which of course got dismissed after a couple months. My most recent and definitely most sever...
Posted by kristine | May 5, 2017 | Hired Attorney
I cannot express my gratitude to Greg and his wonderful team for his outstanding work and support on my case. My charge was a DWI and I honestly did not think I would see a good outcome. However, due to Mr. Grizopoulis who always showed up to every hearing prepared and confident my outcome was more ...
Posted by Fran | June 23, 2016 | Consulted Attorney
I was just on a jury where Greg Grizopoulos was the defense attorney, and I was so impressed with his skills and his presence in general, that I looked him up so I could write a reference. If I ever need a defense attorney, I would, without doubt, give him a shout.
"I have known Mr. Grizopoulos his entire career. I have always known him to be a strong advocate for his clients and a gentleman who is well known and respected in every court. He's also someone who doesn't hesitate to fight to the end on any case. I strongly endorse Gregory Grizopoulos and I am proud to call him a colleague and friend."
"Gregory is an exceptional criminal defense attorney whose reputation speaks for itself. He is highly regarded in his field."
"Greg is an outstanding attorney who will tackle any challenge to ensure that his clients achieve the best result possible. I fully endorse this lawyer."
Criminal defense lawyer
DUI and DWI lawyer
Criminal defense lawyer
Criminal defense lawyer
Personal injury lawyer
2025
Super Lawyer, Super Lawyers
2024
Super Lawyer, Super Lawyers
2023
Super Lawyer, Super Lawyers
2022
Super Lawyer, Super Lawyers
2021
Super Lawyer, Super Lawyers
2017
Who's Who, Who's Who Legal
2015
Bench and Bar Award, New York State Fraternal Order of Court Officers
2001
Excellence in Trial Advocacy, University at Buffalo Law School
2011 - Present
Founding Partner, Grizopoulos & Portz
2006 - 2011
Attorney, DerGarabedian Dillon Grizopoulos & Nathan
2002 - 2006
Assistant District Attorney, Nassau County District Attorney's Office
2001 - 2001
Law Clerk, Manhattan District Attorney's Office
2015 - Present
Former Assistant District Attorney's Association of Nassau CountyPresident
2012 - Present
Hellenic Lawyers AssociationMember
2011 - Present
Criminal Courts Bar Association of Nassau CountyExecutive Board Member
2006 - Present
Criminal Courts Bar Association of Nassau CountyMember
2006 - Present
Former Assistant District Attorney's Association of Nassau CountyMember
2003 - Present
Nassau County Bar AssociationMember
2011 - 2012
American Bar AssociationMember
Acquitted of DWI - Reduced to lesser non-criminal violation
Acquitted of DWI
Acquitted
Acquitted
Acquittal after jury trial
Acquittal after jury trial
Acquitted of most serious charges- Not Guilty on 7 of the 11 charges.
2002
JD - Juris Doctor
1999
BA - Bachelor of Arts
2015
2015 Nassau County Candidates
2011
Fatal DWI Trial and Crime Lab Shut Down
2004
Cross Examination of Police Witness
English
Spanish
Legal Answers
Do a judge do an extensive search on the person who is offering up his or her home to a felon getting on house arrest?
23 May 2021
Can you get a DWI if the police officer did not give you a breathzyer at the station and any paperwork for the tests done.?
19 May 2021
Does smoking marijuana affect the outcomes of an Aggravated DWI screening and assessment pre-conviction?
02 Oct 2020