Lewis Greenbaum
On the New York attorney register since 1974 · office in Chicago, IL
PlainAttorney’s reading of the public register file, not a court record.
- Registration No.
- 1105501
- Admitted
- 1974 · First Department
- Status
- Currently registered
- Next registration
- Jul 2028
Lewis Greenbaum is currently registered on the New York attorney register file of Sep 29, 2026. Admitted in 1974 in the First Department, with an office in Chicago, IL; next registration due Jul 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 Lewis Greenbaum has filed the biennial registration the court system requires; the next one is due in Jul 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
240 other attorneys list Katten Muchin Rosenman LLP or one of its other names as their employer on the register; 7 of them were admitted before 1974, and 18 of the 241 give an office in Chicago, IL. The 5 whose admission is closest to 1974, earliest first:
| Attorney | Admitted | Status |
|---|---|---|
| Eliot Lauer | 1975 | Currently registered |
| Robert Eric Friedman | 1976 | Currently registered |
| James Sheehy Normile | 1977 | Currently registered |
| Mark A. Conley | 1978 | Suspended, delinquent |
| Jill Ellen Darrow | 1979 | 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
Lewis Greenbaum studied at Georgetown University Law Center (the register spells it “GEORGETOWN UNIVERSITY LAW”). 477 of its 11,562 living graduates on the register were admitted in the 1970s, as Lewis Greenbaum was.
- Same law school
- 11,562living graduates; 87.9% registered (current or due), against 87.1% overall
- Office in Chicago, IL
- 2,265living registrants (outside New York State)
Of the 2,265 living registrants with an office in Chicago, IL, 21 were admitted before 1974 and 2,239 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 Katten Muchin Rosenman LLP241 on the register, 7 of the others admitted before 1974; 18 of the 241 give an office in Chicago, IL.
- Georgetown University Law Center graduates on the register11,562 living, 87.9% registered.
- New York-admitted attorneys in Chicago, IL2,265 living registrants give an office there.
- Admitted in 19742,908 people admitted in 1974 are on the register, 1,010 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 Lewis Greenbaum’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 Lewis Greenbaum in 1974. 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).