Jennifer R. Brennan
On the New York attorney register since 2001 · office in Syosset, NY
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 3926052
- Admitted
- 2001 · Second Department
- Status
- Currently registered
- Next registration
- Mar 2027
Jennifer R. Brennan is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2001 in the Second Department, with an office in Syosset, NY; next registration due Mar 2027. The status is the same in all 3 files we hold.
What this status means on the register
On the register, “Currently registered” means Jennifer R. Brennan has filed the biennial registration the court system requires; the next one is due in Mar 2027.
- Currently registered unchanged
- 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 Halliday, Watkins & Mann, P.C. or one of its other names as their employer on the register; 1 of them was admitted before 2001, and 7 of the 8 give an office in Syosset, NY. The 5 whose admission is closest to 2001, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Jacqueline Marie Kelly | 1997 | Currently registered |
| Hans Henry Augustin | 2005 | Currently registered |
| En-Chia Anna Lin | 2008 | Currently registered |
| Nicholas Emilio Perciballi | 2010 | Currently registered |
| Shu Chen | 2018 | 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
Jennifer R. Brennan studied at Touro University Jacob D. Fuchsberg Law Center (the register spells it “JACOB D. FUCHSBERG TOURO LAW CENTER 300 NASSAU ROA”). 1,565 of its 6,308 living graduates on the register were admitted in the 2000s, as Jennifer R. Brennan was.
- Same law school
- 6,308living graduates; 92.5% registered (current or due), against 87.1% overall
- Office in Syosset, NY
- 356living registrants
Of the 356 living registrants with an office in Syosset, NY, 219 were admitted before 2001 and 131 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
- Touro University Jacob D. Fuchsberg Law Center graduates on the register6,308 living, 92.5% registered.
- Attorneys with an office in Syosset, NY356 living registrants give an office there.
- Nassau County’s registered bar9,622 currently registered, 6.92 per 1,000 residents.
- Admitted in 20017,416 people admitted in 2001 are on the register, 2,218 of them through the Second Department.
- Every registration that reads “Currently registered”286,911 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 Jennifer R. Brennan’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 Jennifer R. Brennan in 2001. 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).