William Mattar Accident Lawyers is the Largest Motor Vehicle Accident Law Firm in New York State*. William Mattar and his team only handle one thing: helping people hurt in motor vehicle accidents across New York State.
Free and confidential. No Fee Until We Win™.
Why only motor vehicle accidents
Most injury firms take every kind of case. William Mattar takes one. Every attorney, paralegal and investigator at the firm works on motor vehicle accident claims.
One area of law, handled in depth
Motor vehicle accident law is all we do. Our attorneys regularly handle New York no-fault rules, the serious injury threshold, and the issues that affect how insurers assess motor vehicle accident claims. The Mattar Litigation Method guides our work through each stage of litigation. When appropriate, we may advance litigation expenses, including investigation, expert work, and trial preparation, as permitted by law and the fee agreement.
No Fee Until We Win™
No attorney fee unless the firm wins or settles your case. Your case review is free.
How it worksCalls Answered 24/7
A real person can answer day and night, every day of the year, including holidays.
Call (844) 444-4444Statewide Support
Locations in Williamsville, Buffalo, Rochester, Syracuse, Albany and Long Island.
See all locationsRated 5.0 by reviewers
More than 3,000 five-star reviews across our online profiles from clients and others who have interacted with our firm.
Read reviewsWhat clients say
More than 3,000 five-star reviews across our online profiles. Here are a few comments from clients we’ve represented.
William Mattar did a superb job in representing me after my car accident. The settlement the firm got me was more than I expected. It’s comforting to know they were there for me, and they will be there for you too.
William Mattar went above and beyond to ensure my family’s needs were met. My attorney kept me fully updated with my case along with explaining everything so I could understand. Thank you so much to the William Mattar team. I highly recommend anyone who needs help contact William Mattar.
I called 444-4444 and William Mattar did ALL the rest! From the original call to the close of my case, the customer service was spot-on! No question was left unanswered! Whether I spoke with the administrative assistants, the paralegals, or the attorney, the process was seamless.
All of the staff were amazing and kept me at ease throughout the entire process of my case. I only had to focus on getting better with my treatments.
Meet William Mattar
William Mattar knew from an early age that he wanted to become a lawyer. He watched his father, a Western New York attorney, help people through difficult moments in their lives.
He earned a psychology degree from SUNY Plattsburgh in 1986 and a law degree from Syracuse University College of Law in 1988. He was admitted to practice in New York in 1989 and opened his own firm in Williamsville in 1990.
Over time, he shaped the firm’s practice around representing people injured in motor vehicle accidents. That includes car, truck, motorcycle and rideshare crashes, as well as bicycle and pedestrian accidents involving motor vehicles. This commitment is reflected in the firm’s tagline: “Hurt in a car? Call William Mattar.”
“Helping people. It’s what we do.”
Awards and Accolades
Peer ratings, client ratings and workplace honors for the firm and its attorneys.
Get your free case review
Tell us what happened. A member of our intake team will review your information and call you back as soon as possible.
- No Fee Until We Win™You pay no attorney fee unless we win or settle your case.
- A real person, 24/7Calls and forms are answered day and night, every day of the year.
- Only motor vehicle accidents22 attorneys who handle only motor vehicle accident claims.
Prefer to talk now? Call (844) 444-4444
Through the years
More than 35 years building a firm dedicated to motor vehicle accident cases.
Earns his J.D. from Syracuse University College of Law, after a B.S. in psychology from SUNY Plattsburgh in 1986.
Founds the firm in Williamsville, New York, a year after joining the New York bar.
Begins chairing Scouting America’s Greater Niagara Frontier Council annual dinner, supporting programs for 10,000+ local kids.
Earns Martindale-Hubbell’s AV Preeminent rating, the highest for legal ability and ethics.
Launches In the Heat, Check the Seat, the firm’s longest-running safety campaign.
Named one of the Best Companies to Work For in New York, again in 2018, 2019 and 2021.
Bill is named a Top C-Level Executive by Buffalo Business First and receives Scouting’s North Star Award.
Wins the Golden Gavel from The National Trial Lawyers for its TV commercials, and again in 2023.
Named a Personal Injury Visionary in EvenUp’s Personal Injury Pioneer Awards.
Six attorneys named to New York Super Lawyers lists. Lou and Peter Mattar admitted to the U.S. Supreme Court bar. Touchdowns 4 Hope launches with James Cook.
Our attorneys
22 attorneys only handling motor vehicle accident claims across New York State.
In the news
Recent coverage of the firm and its founder.
In the community
Safety campaigns, donations and local events across New York, guided by the firm’s motto: helping people, it’s what we do.
Touchdowns 4 Hope
$4,444 to Build Promise for every James Cook touchdown in 2026.
Pencils 4 Schools
More than 2.3 million pencils donated to New York teachers and students.
Ride Home Programs
$20 rideshare vouchers so people get home safely on holidays.
Scouting America
Bill has chaired the Greater Niagara Frontier Council’s annual dinner since 2002.
What we believe
These values were written by our team and shape how we serve clients, support one another, and contribute to our community.
- Serve our clients as one teamWe work together to keep clients informed and address their questions.
- Support our colleaguesWe value collaboration and the different strengths each person brings to the team.
- Love our familiesWe value the time our team spends with family and friends.
- Support our communityThrough safety campaigns, donations, and local events, we support communities across New York.
- Keep getting betterTeam members contribute to committees and projects that help us learn and improve.
- Make a differenceWe use our legal experience to help people through difficult moments after a motor vehicle accident.
Locations across New York
Seven locations serve clients statewide. One number reaches all of them: (844) 444-4444.
WilliamsvillePrincipal Location
6720 Main St, Suite 100Williamsville, NY 14221(716) 444-4444
Contact the firm
Long Island
500 N Broadway, Suite 161-CJericho, NY 11753(516) 444-4444
Long Island car accident lawyers
Frequently asked questions
Who founded William Mattar Accident Lawyers?
William Mattar founded the firm in 1990 in Williamsville, New York. He earned his law degree from Syracuse University College of Law in 1988 and remains the firm's owner and president.
What cases does William Mattar handle?
Only motor vehicle accident injury cases: car, truck, motorcycle, rideshare, bicycle and pedestrian accidents, drunk and distracted driving accidents, self-driving car accidents, vehicle product liability and wrongful death.
Are you a general personal injury firm?
No. William Mattar Accident Lawyers only handles motor vehicle accident injury cases, including car, truck, motorcycle, rideshare, bicycle and pedestrian accidents. Every attorney, paralegal and investigator at the firm works only on motor vehicle accident claims.
How big is William Mattar Accident Lawyers?
The firm has 22 attorneys and seven locations across New York State: Williamsville, two in Buffalo, Rochester, Syracuse, Albany and Long Island. It is the Largest Motor Vehicle Accident Law Firm in New York State*, based on an RDC study.
How much does it cost to hire William Mattar?
Nothing up front. Under the firm's No Fee Until We Win™ policy, clients pay no attorney fee unless the firm wins or settles their case. Case reviews are free.
How do I contact William Mattar?
Call (844) 444-4444, which is answered 24 hours a day, every day of the year, or fill out the free case review form at williammattar.com.
What awards has William Mattar received?
William Mattar holds an Avvo 10.0 Superb rating and Martindale-Hubbell's AV Preeminent rating. Six of the firm's attorneys were named to the 2026 New York Super Lawyers lists, and the firm has an A+ rating from the Better Business Bureau.
What does “Hurt in a car? Call William Mattar” mean?
It is the firm's slogan. It reflects that the firm only handles injury claims from motor vehicle accidents, and its 444-4444 number connects to the firm from anywhere in New York.
How is William Mattar involved in the community?
The firm runs safety campaigns like In the Heat, Check the Seat and Buckle Your Belt, has donated more than 2.3 million pencils through Pencils 4 Schools, offers Ride Home vouchers on holidays and runs Touchdowns 4 Hope with Bills running back James Cook.
Hurt in a car? Call William Mattar.
Tell us what happened. A member of our intake team will call you back as soon as possible. No Fee Until We Win™.
*The “largest motor vehicle accident firm in New York State” distinction is based on an RDC study. Attorney Advertising. Prior results do not guarantee a similar outcome. Client may remain responsible for costs and expenses under the firm’s written contingent fee agreement.