Mark Andrew Costello
- Verified against the New York State attorney registration file, July 2026
36 years in practice
First admitted in 1990
First admitted in 1990
- 1990 Admitted, New York
Overview
Mark Andrew Costello is an attorney admitted in New York (since 1990), based in Milford, PA.
This profile is built from public bar records and shows only what those records contain. Mark has not written or endorsed anything on this page.
Jurisdictions admitted
| Jurisdiction | Admitted | Bar number | Status |
|---|---|---|---|
| New York | 1990 | #2330819 | Active |
Education
- YaleLaw school, per the bar record
Contact and offices
Registered office
Milford, PA
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 Milford
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.