John Joseph Sullivan
Claim this profileJohn Joseph Sullivan is a lawyer licensed in New York under New York State Unified Court System registration number 2146462. According to New York State Unified Court System records, the license status of John Joseph Sullivan is Active, with admission in 1987. John Joseph Sullivan has an address of record in Washington, DC, with Mayer Brown LLP. This page is a directory listing by ALCBar Lawyer Directory; it is not an endorsement or a referral.
License
- License jurisdiction
- New York
- Licensing authority
- New York State Unified Court System
- Registration number
- 2146462
- License status
- Active, according to New York State Unified Court System records (official registration data). Look up registration number 2146462 in the New York State Unified Court System attorney search
- Admitted
- 1987
- Status last verified
- Not yet verified by ALCBar. The status was taken from the NYS Unified Court System's official attorney registration data on data.ny.gov (dataset last updated October 10, 2026) and has not been re-checked against that dataset since.
Firm and location
- Firm or employer
- Mayer Brown LLP
- Address of record
- 1999 K St NW
- City
- Washington
- County
- Not stated in the source
- Office state or country
- DC (outside the license state of New York)
- ZIP code
- 20006-1118
Contact details
- Phone
- (202) 263-3004
- Fax
- Not stated in the source
- Not stated in the source
- Website
- Not stated in the source
Practice areas
No practice areas are listed for John Joseph Sullivan. This means the information is not available, not that John Joseph Sullivan does not practice in any area.
Documented matter experience
ALCBar has no reviewed matter records for John Joseph Sullivan. This means the information is not available, not that John Joseph Sullivan lacks experience.
Sources and verification
| Information | Source | Status |
|---|---|---|
| Name, bar number, license status, admission date | New York State Unified Court System attorney registration data | Copy of the public record; not re-checked by ALCBar since it was copied |
| Firm, address, phone, fax, email, website | Directory copy of New York State Unified Court System records | Not confirmed by John Joseph Sullivan; email delivery not tested |
| Practice areas | Directory source file (origin not confirmed) | Not confirmed |
| Information confirmed by the attorney | Profile claim | None. This profile has not been claimed. |
| Independently reviewed information | ALCBar review | None |
Directory listing last updated 2026-10-12. If anything here differs from the New York State Unified Court System record, the New York State Unified Court System record is the authority.
This listing comes from public licensing records. It is not an endorsement, a referral, or a statement about the skills of John Joseph Sullivan. ALCBar does not receive payment for this listing.