New York attorney · Reg. #2176246

Robert Patrick O'Brien

Registered — renewal due (registry: Due to reregister within 30 days of birthday)

Current employer

Mahon, Mahon, Kerins & O'Brien LLC · Garden City, NY · since at least September 2026

Admission

Admitted 1988, Second Department · St. John's University School of Law

Employment history

• Mahon, Mahon, Kerins & O'Brien LLC · Garden City, NY · current

Compiled from NYS Office of Court Administration registration records and published NY Appellate Division decisions; current as of October 2026. Not an official record; verify with the NY Courts Attorney Search.