New York attorney record · Judicial Dept 1
Leslie D'Arcy Callahan
Harvard Law School alumna, admitted to the New York bar in 1990, registered office in Washington, DC. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1990
- Admitted
- 36
- Years in bar
- 2349868
- NY reg #
The record in one line
With 36 years on the register since a 1990 admission, Leslie D'Arcy Callahan ranks among the New York bar's most senior active practitioners, longer-tenured than 79% of the currently-active bar.
- 36 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #1079 of 12,540
- by tenure in Washington office peers
- Law school
- Harvard Law School
Data updated August 2026
What this profile tells you
Bar status & tenure
Registration 2349868 with the New York bar authority has long belonged to Leslie D'Arcy Callahan, a veteran practitioner still in active good 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 George Washington University Law School, located in Washington, DC, ZIP 20052. 5 other attorneys share this firm affiliation in the registry. Educational background: Harvard Law School (9,205 registered alumni).
State context & due diligence
After 36 years on the register, Leslie D'Arcy Callahan still falls within the New York bar's active cohort, a share of the register detailed further below.
Experience vs. the active New York bar
Few active New York attorneys match Leslie D'Arcy Callahan's 36 years since admission in 1990.
36 years on the New York bar
Years since admission, all currently-active NY attorneys
36 Top 21% higher than 79% 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 · August 2026
Tenure among Washington, DC office peers
Leslie D'Arcy Callahan is earlier in the Washington, DC office cohort than most peers: local tenure rank #1,079 of 12,540 (9th percentile). See the Washington attorney directory .
- Local rank
- #1,079
- City cohort
- 12,540
- Local percentile
- 9th
- Admitted
- 1990
Nearest tenure peers in Washington
- Gerald Mark Alexander admitted 1990 · 36 yr
- Theresa Ann Amato admitted 1990 · 36 yr
- Carlos Tomas Angulo admitted 1990 · 36 yr
- David Uri Ben Carmel admitted 1990 · 36 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 August 2026. Derived local rank, not published upstream.
How Leslie compares to fellow Harvard Law School alumni
Among the 8,724 Harvard Law School graduates in the New York register, Leslie D'Arcy Callahan is longer-tenured than 99%.
36 years vs. Harvard Law School alumni
Years since admission - 8,724 NY-registered alumni of this school
36 Top 1% higher than 99% of 8,724 fellow alumni
Each bar is a band; taller bars hold more fellow alumni. 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 · August 2026
Harvard Law School's active-bar rate
Of Harvard Law School's 9,205 alumni in the New York register, 74.8% currently hold "Currently registered" status, above the statewide average.
The 1990 admission class today
Of the 6,112 attorneys admitted to the New York bar in 1990, 56.3% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 2349868
- Year Admitted
- 1990 (36 yrs · veteran)
- Judicial Department
- 1
- Next Registration
- Aug 2028
Location & Contact
- Company
- George Washington University Law School
- City
- Washington, DC
- ZIP Code
- 20052
- Phone
- (574) 210-5818
Education
Status Distribution Across the New York Bar
Leslie D'Arcy Callahan'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: George Washington University Law School
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Harvard Law School alumni
Fellow alumni on the NY register whose admission year is closest to 1990 (excluding same-firm colleagues above).
Same admission year (1990), other cities
NY-registered attorneys admitted in 1990 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 Leslie D'Arcy Callahan: 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 (~1990)
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
Verify This Attorney
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Compare attorneys →Before you rely on this record
Leslie D'Arcy Callahan'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 Leslie Callahan licensed?
Leslie Callahan is licensed to practice law in New York.
When was Leslie D'Arcy Callahan admitted to the bar?
Leslie D'Arcy Callahan's admission to the New York bar dates back to 1990.
Where did Leslie D'Arcy Callahan go to law school?
Leslie D'Arcy Callahan attended Harvard Law School.
What company does Leslie D'Arcy Callahan work for?
Leslie D'Arcy Callahan is associated with George Washington University Law School in Washington, DC.
Is Leslie D'Arcy Callahan in good standing?
Yes, Leslie D'Arcy Callahan 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.