Mark Jon O'Brien
- Verified against the Florida bar record, July 2026
28 years in practice
First admitted in 1998
First admitted in 1998
- 1998 Admitted, Florida
Overview
Mark Jon O'Brien is an attorney admitted in Florida (since 1998), based in Tampa, FL.
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 |
|---|---|---|---|
| Florida | 1998 | #160210 | Active |
Contact and offices
O'Brien Hatfield, PA
511 W Bay St Ste 330
Tampa, FL 33606
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 Tampa
Ordered by years licensed, from the same public records.
Sources for this profile: the Florida bar record. License status can change; check the bar's own record for the current status before hiring. Updated July 13, 2026.