Official NY OCA attorney registration data · Updated 2026 Methodology Discipline records

John Michael O'Brien

Currently registered

John Michael O'Brien is an attorney admitted to the New York State Bar in 1990, with a registered practice address in Sag Harbor, New York. According to the New York Office of Court Administration, the current registration status on record is Currently registered.

Registration number2312387
Bar statusCurrently registered
Year admitted1990
Judicial departmentDepartment 2
Law schoolSt Johns
Practice citySag Harbor, NY
CountySuffolk
Firm / organizationJohn M. O'Brien Attorney At Law
Office addressPo Box 3147, Sag Harbor, NY, 11963
Phone(631) 725-2020
Next registration dueAug 2026

Office location

Registered office address on file with the New York State Bar. Verify before visiting, as the address reflects the contact on record and may be a firm rather than a personal office.

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