William K. Mattar
- Verified against the New York State attorney registration file and the Texas bar record, July 2026
37 years in practice
First admitted in 1989
First admitted in 1989
- 1989 Admitted, New York
- 2014 Admitted, Texas
Overview
William K. Mattar is an attorney admitted in New York (since 1989) and Texas (since 2014), based in Williamsville, NY.
This profile is built from public bar records and shows only what those records contain. William has not written or endorsed anything on this page.
Jurisdictions admitted
| Jurisdiction | Admitted | Bar number | Status |
|---|---|---|---|
| New York | 1989 | #2280535 | Active |
| Texas | 2014 | #24090553 | Active |
Education
- Syracuse UniversityLaw school, per the bar record
Contact and offices
William Mattar, P.C.
6720 Main St Ste 100
Williamsville, NY 14221
The address and number above come from the attorney's public bar registration, which can lag a recent move. Confirm before visiting.
Other attorneys in Williamsville
Ordered by years licensed, from the same public records.
Sources for this profile: the New York State attorney registration file; the Texas bar record. License status can change; check the bar's own record for the current status before hiring. Updated July 12, 2026.