New York attorney record · Judicial Dept 1
Rebecca O'Brien
Fordham Law School Llm alumna, admitted to the New York bar in 2017, registered office in Washington, DC. This record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2017
- Admitted
- 9
- Years in bar
- 5539200
- NY reg #
The record in one line
Admitted in 2017, Rebecca O'Brien has built 9 years of active New York practice - more tenure than 13% of the state's currently-active attorneys.
- 9 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #9873 of 12,540
- by tenure in Washington office peers
- Law school
- Fordham Law School Llm
Data updated September 2026
What this profile tells you
Bar status & tenure
Bar number 5539200 on the New York register belongs to Rebecca O'Brien, currently in active standing. Registration is recorded within Judicial Department 1, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Sidley Austin LLP, located in Washington, DC, ZIP 20005. 5 other attorneys share this firm affiliation in the registry. Educational background: FORDHAM LAW SCHOOL LLM.
State context & due diligence
Rebecca O'Brien is currently part of the New York bar's active cohort, a group the breakdown below sizes against the full register.
Experience vs. the active New York bar
9 years into an active New York practice since a 2017 admission, Rebecca O'Brien sits here on the statewide experience curve - taller bars hold more attorneys at that experience level.
9 years on the New York bar
Years since admission, all currently-active NY attorneys
9 Top 87% higher than 13% of 290,787 active NY attorneys
Each bar is a band; taller bars hold more active NY attorneys. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source NY Office of Court Administration, Attorney Registration · September 2026
Tenure among Washington, DC office peers
Among the 12,540 NY-registered attorneys with a listed office in Washington, DC, Rebecca O'Brien ranks #9,873 by tenure, longer-tenured than 79% of that city cohort. See the Washington attorney directory .
- Local rank
- #9,873
- City cohort
- 12,540
- Local percentile
- 79th
- Admitted
- 2017
Nearest tenure peers in Washington
- Bria Michelle Adams admitted 2017 · 9 yr
- Robert Hilton Adams admitted 2017 · 9 yr
- Erica Efe Aghedo admitted 2017 · 9 yr
- Jessica Alcantara admitted 2017 · 9 yr
How local rank is computed
Rank uses years since NY-bar admission among non-deceased registry rows that list the same office city and state, a local placement, not a statewide claim. Source: NY Office of Court Administration Attorney Registration · as of September 2026. Derived local rank, not published upstream.
The 2017 admission class today
Of the 8,202 attorneys admitted to the New York bar in 2017, 93.5% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 5539200
- Year Admitted
- 2017 (9 yrs · mid-career)
- Judicial Department
- 1
- Next Registration
- Jan 2027
Location & Contact
- Company
- Sidley Austin LLP
- City
- Washington, DC
- ZIP Code
- 20005
- Phone
- (202) 736-8276
Education
FORDHAM LAW SCHOOL LLM
Status Distribution Across the New York Bar
Rebecca O'Brien's current status, "Currently registered", places this attorney in the 67.2% of the 432,625-attorney New York register currently marked active.
Full statewide breakdown & source note
Source: NY Office of Court Administration, Attorney Registrations. Status counts reflect the latest reporting cycle. Bar status confirms registration only; it does not imply competence, specialty fit, or freedom from complaints.
Same firm affiliation: Sidley Austin LLP
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Same admission year (2017), other cities
NY-registered attorneys admitted in 2017 whose listed office city differs from Washington, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Rebecca O'Brien: closest NY bar admission year outside DC, and closest out-of-state office cities by how many NY-registered attorneys they list (~12,541 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2017)
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
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Compare attorneys →Before you rely on this record
Rebecca O'Brien's "Currently registered" listing confirms bar standing only, it is a registration fact to verify, not a verdict on quality or competence.
Frequently Asked Questions
Where is Rebecca O'Brien licensed?
Rebecca O'Brien is licensed to practice law in New York.
When was Rebecca O'Brien admitted to the bar?
Rebecca O'Brien has been on the New York bar register since 2017.
Where did Rebecca O'Brien go to law school?
Rebecca O'Brien attended FORDHAM LAW SCHOOL LLM.
What company does Rebecca O'Brien work for?
Rebecca O'Brien is associated with Sidley Austin LLP in Washington, DC.
Is Rebecca O'Brien in good standing?
Yes, Rebecca O'Brien holds active bar status ("Currently registered").
Cite this page & disclosure
Sourced from the NY Office of Court Administration, informational only, not legal advice. Full disclosure.
Read our methodology - how this data is sourced, computed, and verified.