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

Johnny Chihwei Ko

Currently registered

Johnny Chihwei Ko is an attorney admitted to the New York State Bar in 1998, with a registered practice address in Garden City, New York. According to the New York Office of Court Administration, the current registration status on record is Currently registered.

Registration number2880821
Bar statusCurrently registered
Year admitted1998
Judicial departmentDepartment 2
Law schoolSt John University
Practice cityGarden City, NY
CountyNassau
Firm / organizationMccormack, Mattei & Holler Pc
Office address1035 Stewart Ave Fl S, Garden City, NY, 11530
Phone(516) 505-0600
Next registration dueSep 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.

Verify this record

Bar status can change at any time. For the authoritative, real-time status of Johnny Chihwei Ko, confirm directly through the official New York Attorney Search using the registration number above. This record is republished from public New York State data and is provided for reference only — it is not legal advice and not an endorsement.

Other attorneys in Garden City

See all attorneys in Garden City, NY →

Other graduates of St John University

See all graduates of this school →

Helpful resources

Created by SeoFune