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Louis Casimer Mussari

Louis Casimer Mussari

Attorney with over 10 years of trial experience. A proven fighter.
  • Criminal Law, DUI & DWI, Family Law ...
  • New York
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Claimed Lawyer Profile


After nearly a decade of public service as an Assistant District Attorney in the Erie County District Attorney’s Office, Louis C. Mussari founded a small boutique firm focused Criminal Defense, Personal Injury, and Insurance Defense Litigation.

Mr. Mussari is a consummate professional in the courtroom and his background as a prosecutor makes him a formidable opponent. Louis has successfully litigated jury trials to verdict in the following areas: Homicide, Rape, Gun Possession, Burglary, Strangulation, and Driving While Intoxicated.

Following graduation from the State University of New York at Buffalo in 2008 (B.A. Psychology Magna Cum Laude) Mr. Mussari attended Law School at the State University at Buffalo (J.D. 2011). Mr. Mussari was admitted to the State Bar of New York in 2011 and has remained a member in good standing ever since.


Mr. Mussari is a lifetime member of the Bar Association of Erie County and serves on the Criminal Law Committee, Solo and Small Law Firm Practice Committee, and the Diversity and Inclusion Committee. In addition, Mr. Mussari is a registered member of New York State Defenders Association.

In addition to practicing law, Mr. Mussari is an Adjunct Professor of Criminal Law at the University at Buffalo. From the unique perspective of a criminal defense attorney with nearly a decade of experience as a prosecutor he offers a comprehensive and challenging class in Criminal Law which covers legal research, suppression issues, pre- and post-trial motions and takes a hard look into limitations of the criminal justice system.

Practice Areas
Criminal Law
Drug Crimes, Fraud, Gun Crimes, Internet Crimes, Sex Crimes, Theft, Violent Crimes
Family Law
Restraining Orders
White Collar Crime
Insurance Defense
Personal Injury
Animal & Dog Bites, Brain Injury, Car Accidents, Construction Accidents, Motorcycle Accidents, Premises Liability, Truck Accidents, Wrongful Death
  • Free Consultation
  • Credit Cards Accepted
Jurisdictions Admitted to Practice
New York
New York State Office of Court Administration
ID Number: 4982542
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SUNY Buffalo Law School
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Professional Associations
State Bar of New York  # 4982542
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Contact & Map
Louis C. Mussari, Attorney at Law
42 Delaware Ave
Suite 700
Buffalo, NY 14202
Telephone: (716) 430-2147
Monday: 8 AM - 6 PM
Tuesday: 8 AM - 6 PM
Wednesday: 8 AM - 6 PM
Thursday: 8 AM - 6 PM (Today)
Friday: 8 AM - 6 PM
Saturday: 12 PM - 3 PM
Sunday: 12 PM - 3 PM
Notice: Open Monday through Friday and available on weekends by appointment
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