Founding Attorney · William Mattar Accident Lawyers
William K. Mattar, J.D. (New York attorney registration #2280535) is listed as “Currently registered” in the official New York attorney registry, admitted in 1989, and practices with William Mattar Accident Lawyers. Registry status checked by QOLA on July 16, 2026. No public disciplinary record was on file as of QOLA's June 4, 2026 check of the official directory.
Auditable credential facts for one attorney, mirrored from the official registry. Check any of them yourself without taking our word for it.
2280535Registry status and public records can change between QOLA's 90-day review cycles. The official New York registry is always the current source of truth.
William K. Mattar founded William Mattar Accident Lawyers and has practiced motor-vehicle-accident law in New York for more than 35 years, admitted to the New York State Bar in 1989 after earning his J.D. from Syracuse University College of Law.
The firm he leads focuses exclusively on motor vehicle accident cases and operates six New York offices, in Williamsville (HQ), Buffalo, Albany, Rochester, Syracuse, and Long Island (Jericho), with service areas across the state.
William K. Mattar, J.D. is a Founding Attorney at William Mattar Accident Lawyers, admitted to practice in New York in 1989 (New York attorney registration #2280535). Practice areas on record: Personal Injury Law, Motor Vehicle Accidents, Truck Accidents, Motorcycle Accidents, Rideshare Accidents, Wrongful Death.
William K. Mattar, J.D. holds New York attorney registration #2280535, admitted in 1989, with registry status “Currently registered” as of July 16, 2026. Confirm directly on the official New York attorney search.
New York attorney registration #2280535. In New York this is formally called an Attorney Registration Number. Look it up yourself via the NYS Unified Court System directory.
William K. Mattar, J.D. was admitted to practice in New York in 1989, per the official attorney registry.
Syracuse University College of Law, J.D. (1988). Undergraduate: SUNY Plattsburgh, B.S. Psychology (1986).
Practice areas on record for William K. Mattar, J.D.: Personal Injury Law, Motor Vehicle Accidents, Truck Accidents, Motorcycle Accidents, Rideshare Accidents, Wrongful Death, with William Mattar Accident Lawyers. QOLA records practice focus but does not evaluate case results or competence — ask the firm about your specific case type.
William K. Mattar, J.D. practices with William Mattar Accident Lawyers, which has New York offices in Williamsville, NY, Buffalo, NY, Albany, NY, Rochester, NY, Syracuse, NY, Long Island, NY (Jericho).
No public disciplinary record was on file when QOLA last checked the official directory on June 4, 2026. This is not a permanent guarantee; check current status directly with the official registry.
Search for “William K. Mattar” in the official NYS Unified Court System attorney directory and match registration #2280535. The registry — not this page — is always the current source of truth.
Registry status was last checked on July 16, 2026 and is re-checked on a 90-day cycle. Registry status and public records can change between checks.
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