Matthew Warren O'Neil
- Verified against the New York State attorney registration file, July 2026
10 years in practice
First admitted in 2016
First admitted in 2016
- 2016 Admitted, New York
Overview
Matthew Warren O'Neil is an attorney admitted in New York (since 2016), based in Syracuse, NY.
This profile is built from public bar records and shows only what those records contain. Matthew has not written or endorsed anything on this page.
Jurisdictions admitted
| Jurisdiction | Admitted | Bar number | Status |
|---|---|---|---|
| New York | 2016 | #5417605 | Active |
Education
- Cornell Law SchoolLaw school, per the bar record
Contact and offices
Costello Cooney & Fearon PLLC
211 W Jefferson St Ste 1
Syracuse, NY 13202
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 Syracuse
Ordered by years licensed, from the same public records.
Sources for this profile: the New York State attorney registration file. License status can change; check the bar's own record for the current status before hiring. Updated July 12, 2026.