Jason Matthew Engelstein
On the New York attorney register since 2015 · office in Rockville Centre, NY
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 5366323
- Admitted
- 2015 · First Department
- Status
- Currently registered
- Next registration
- Dec 2027
Jason Matthew Engelstein is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2015 in the First Department, with an office in Rockville Centre, NY; next registration due Dec 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 Jason Matthew Engelstein has filed the biennial registration the court system requires; the next one is due in Dec 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
5 other attorneys list Sidrane, Schwartz-Sidrane, Perinbasekar & Littman, LLP or one of its other names as their employer on the register; 4 of them were admitted before 2015, and all 6 give an office in Rockville Centre, NY. The 5 whose admission is closest to 2015, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Karen Schwartz-Sidrane | 1986 | Currently registered |
| Steven Donald Sidrane | 1995 | Currently registered |
| Arun James Perinbasekar | 2009 | Currently registered |
| Michael Hal Littman | 2010 | Currently registered |
| Dwij Atul Patel | 2022 | 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
Jason Matthew Engelstein studied at Georgetown University Law Center. 3,165 of its 11,562 living graduates on the register were admitted in the 2010s, as Jason Matthew Engelstein was.
- Same law school
- 11,562living graduates; 87.9% registered (current or due), against 87.1% overall
- Office in Rockville Centre, NY
- 325living registrants
Of the 325 living registrants with an office in Rockville Centre, NY, 275 were admitted before 2015 and 44 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
- Georgetown University Law Center graduates on the register11,562 living, 87.9% registered.
- Attorneys with an office in Rockville Centre, NY325 living registrants give an office there.
- Nassau County’s registered bar9,622 currently registered, 6.92 per 1,000 residents.
- Admitted in 20158,867 people admitted in 2015 are on the register, 2,550 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 Jason Matthew Engelstein’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 Jason Matthew Engelstein in 2015. 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).