RSM US LLP
A law firm on the New York attorney register · most who list it give an office in New York
- On the register
- 44
- Registered, current or due
- 44
- Admitted
- 1979 to 2023
44 attorneys on the New York register file of Sep 29, 2026 list RSM US LLP as their employer; 44 (100%) are registered (currently, or due to re‑register), against 87.1% of all living registrants. They were admitted between 1979 and 2023 (median 2009), and 17 give an office in New York.
When its attorneys were admitted
| Decade | This firm | Every living registrant |
|---|---|---|
| 1970s | 2% | 6% |
| 1980s | 9% | 13% |
| 1990s | 14% | 17% |
| 2000s | 25% | 22% |
| 2010s | 39% | 24% |
| 2020s | 11% | 15% |
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; employer spellings merged (methodology).
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026; school spellings matched.
Where its attorneys have their office
| Office | Attorneys |
|---|---|
| New York, NY | 17 |
| Washington, DC | 5 |
| Boston, MA | 4 |
| McLean, VA | 3 |
| Chicago, IL | 2 |
| San Francisco, CA | 2 |
Attorneys who list RSM US LLP on the register, page 3 of 3
Currently registered attorneys first, most recently admitted first.
| Attorney | Admitted | Status |
|---|---|---|
| Mark Lee Ozerkis | 2008 | Due to re‑register |
| Robert Zonenshein | 2000 | Due to re‑register |
| Stefan Gottschalk | 1992 | Due to re‑register |
| Donald Benjamin Susswein | 1979 | Due to re‑register |
Source: NY Office of Court Administration, attorney registration file (data.ny.gov, dataset eqw2-r5nb), downloaded Sep 29, 2026.
Looking for a lawyer for a matter?
The register lists who is admitted and where their office is, not what kind of law anyone practises, so this page cannot suggest a lawyer for a problem. The New York State Bar Association’s Lawyer Referral Service matches people with lawyers by area of law; once you have a name, its record here shows whether the lawyer is registered.