Jonathan Louis Corsico
On the New York attorney register since 2004 · office in Washington, DC
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 4245932
- Admitted
- 2004 · First Department
- Status
- Currently registered
- Next registration
- Oct 2028
Jonathan Louis Corsico is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 2004 in the First Department, with an office in Washington, DC; next registration due Oct 2028. The status is the same in all 3 files we hold.
What this status means on the register
On the register, “Currently registered” means Jonathan Louis Corsico has filed the biennial registration the court system requires; the next one is due in Oct 2028.
- 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
1,307 other attorneys list Simpson Thacher & Bartlett LLP or one of its other names as their employer on the register; 204 of them were admitted before 2004, and 65 of the 1,308 give an office in Washington, DC. The 5 whose admission is closest to 2004, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Jorge Batlle | 2004 | Currently registered |
| Andrew Glenn Blau | 2004 | Currently registered |
| Summer Craig | 2004 | Currently registered |
| Kenneth Carl Ehrhard | 2004 | Currently registered |
| Douglas Bradford Freeman | 2004 | Currently registered |
All 1,308 registrations that list Simpson Thacher & Bartlett LLP
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
Jonathan Louis Corsico studied at Northwestern University Pritzker School of Law (the register spells it “NORTHWESTERN UNIVERSITY”). 758 of its 3,128 living graduates on the register were admitted in the 2000s, as Jonathan Louis Corsico was.
- Same law school
- 3,128living graduates; 87.0% registered (current or due), against 87.1% overall
- Office in Washington, DC
- 12,527living registrants (outside New York State)
Of the 12,527 living registrants with an office in Washington, DC, 3,984 were admitted before 2004 and 8,205 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
- Everyone who lists Simpson Thacher & Bartlett LLP1,308 on the register, 204 of the others admitted before 2004; 65 of the 1,308 give an office in Washington, DC.
- Northwestern University Pritzker School of Law graduates on the register3,128 living, 87.0% registered; 27 of them list Simpson Thacher & Bartlett LLP.
- New York-admitted attorneys in Washington, DC12,527 living registrants give an office there.
- Admitted in 20048,407 people admitted in 2004 are on the register, 3,062 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 Jonathan Louis Corsico’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 Jonathan Louis Corsico in 2004. The register places the office outside New York, so a complaint would go to that department’s grievance committee (22 NYCRR 1240.7(a)(2)).
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).