Deirdre Lee Henderson
On the New York attorney register since 1978 · office in New York, NY
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 1462340
- Admitted
- 1978 · First Department
- Status
- Currently registered
- Next registration
- Mar 2028
Deirdre Lee Henderson is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 1978 in the First Department through law office study rather than a law school, with an office in New York, NY; next registration due Mar 2028. Since Jul 3, 2026 it has moved only through the routine two-year cycle.
What this status means on the register
On the register, “Currently registered” means Deirdre Lee Henderson has filed the biennial registration the court system requires; the next one is due in Mar 2028.
- Currently registered unchanged
- Due to re‑register to Currently registered the routine two-year cycle: the registration window closed with a filing
- Due to re‑register 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
The only other attorney who lists Henderson & Koplik LLP or one of its other names:
| Attorney | Admitted | Status |
|---|---|---|
| Marc Stephen Koplik | 1973 | 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
The register gives the school as “Law Office Study pursuant to NYS Court of Appeals Rules”.
- Office in New York, NY
- 93,604living registrants
Of the 93,604 living registrants with an office in New York, NY, 3,808 were admitted before 1978 and 89,226 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
- Attorneys with an office in New York, NY93,604 living registrants give an office there.
- New York County’s registered bar75,989 currently registered, 46.63 per 1,000 residents.
- Admitted in 19783,834 people admitted in 1978 are on the register, 1,466 of them through the First 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 Deirdre Lee Henderson’s standing, contact the Attorney Registration Unit of the NY Office of Court Administration (nycourts.gov/attorneys), or ask the Appellate Division, First Department, which admitted Deirdre Lee Henderson in 1978. A complaint about this attorney would go to the First Department’s grievance committee, which covers New York 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).