Kenneth P. Mahon
On the New York attorney register since 1986 · office in Garden City South, NY
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 2086320
- Admitted
- 1986 · Second Department
- Status
- Due to re‑register
- Next registration
- Oct 2026
Kenneth P. Mahon is due to re‑register on the New York attorney register file of Sep 29, 2026. Admitted in 1986 in the Second Department, with an office in Garden City South, NY; next registration due Oct 2026. Since Jul 3, 2026 it has moved only through the routine two-year cycle.
What this status means on the register
On the register, “Due to re‑register” means the attorney has a biennial registration falling due or overdue: the rule asks for it within 30 days after the attorney’s birthday in each alternate year, and the record gives the month it is due. The value stays until the register records the filing or marks the registration delinquent, so the month can have passed; by itself it is not a finding.
- Currently registered to Due to re‑register the routine two-year cycle: the registration window opened
- Currently registered unchanged
- Currently registered the first file we hold
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; the Jul 3, 2026 and Aug 6, 2026 files for the history.
Others who list this employer on the register
7 other attorneys list Mahon, Mahon, Kerins & O’Brien, LLC or one of its other names as their employer on the register; 0 of them were admitted before 1986, and 4 of the 8 give an office in Garden City South, NY. The 5 whose admission is closest to 1986, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Lawrence T. Mahon | 1986 | Currently registered |
| Richard T. Kerins | 1987 | Currently registered |
| Robert Patrick O’Brien | 1988 | Due to re‑register |
| Joseph Andrew Hyland | 2000 | Currently registered |
| James McEntee Kerins | 2017 | Currently registered |
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; employer spellings merged (methodology).
Where this record sits on the register
Kenneth P. Mahon studied at St. John’s University School of Law (the register spells it “ST JOHNS UNIVERSITY”). 3,059 of its 15,595 living graduates on the register were admitted in the 1980s, as Kenneth P. Mahon was.
- Same law school
- 15,595living graduates; 88.6% registered (current or due), against 87.1% overall
- Office in Garden City South, NY
- 11living registrants
Of the 11 living registrants with an office in Garden City South, NY, 3 were admitted before 1986 and 6 after.
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; living registrants only.
Questions this record leads to
- St. John’s University School of Law graduates on the register15,595 living, 88.6% registered.
- Nassau County’s registered bar9,622 currently registered, 6.92 per 1,000 residents.
- Admitted in 19866,111 people admitted in 1986 are on the register, 2,598 of them through the Second Department.
- Every registration that reads “Due to re‑register”47,986 on the register file of Sep 29, 2026, by decade of admission.
- What a New York lawyer may chargeThe court rules on fees, retainers and fee disputes, each cited.
How to confirm it officially
For a statement of Kenneth P. Mahon’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division, Second Department, which admitted Kenneth P. Mahon in 1986. A complaint about this attorney would go to the Second Department’s Grievance Committee for the Tenth Judicial District, which covers Nassau County, where the register places the office.
This page reads the register file of Sep 29, 2026, and the court system’s own search can be newer; the register shows only the current value, so a suspension that ended before the files we hold, or a censure, leaves no trace here (Appellate Division decisions are published through the court system’s Law Reporting Bureau).