New York attorney record · Judicial Dept 1
Ross Michael Leff
Columbia Law School alumna, admitted to the New York bar in 2008, registered office in New York, NY. This established record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2008
- Admitted
- 18
- Years in bar
- 4641866
- NY reg #
The record in one line
Ross Michael Leff has held an active New York bar license for 18 years - admitted in 2008, longer-tenured than 38% of the state's currently-active attorneys.
- 18 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #43030 of 93,608
- by tenure in New York office peers
- Law school
- Columbia Law School
Data updated August 2026
What this profile tells you
Bar status & tenure
Ross Michael Leff carries New York bar registration 4641866, an established, active practitioner in 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 Kirkland & Ellis LLP, located in New York, NY (New York County), ZIP 10022. 5 other attorneys share this firm affiliation in the registry. Educational background: COLUMBIA LAW SCHOOL (11,650 registered alumni).
State context & due diligence
With an established practice on record, Ross Michael Leff remains inside the New York bar's active cohort - see below for how that share of the register compares.
Experience vs. the active New York bar
Ross Michael Leff was admitted in 2008, giving 18 years on the New York register.
18 years on the New York bar
Years since admission, all currently-active NY attorneys
18 Top 62% higher than 38% 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 New York, NY office peers
Ross Michael Leff's 18-year NY register tenure places mid-pack in New York, NY: rank #43,030 of 93,608 office peers (46th percentile). See the New York attorney directory .
- Local rank
- #43,030
- City cohort
- 93,608
- Local percentile
- 46th
- Admitted
- 2008
Nearest tenure peers in New York
- Shirin Katherine Aboujawde admitted 2008 · 18 yr
- Shaun P. Abraham admitted 2008 · 18 yr
- David G. Abrams admitted 2008 · 18 yr
- Matthew Benjamin Abrams admitted 2008 · 18 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 Ross compares to fellow Columbia Law School alumni
Among the 4,784 Columbia Law School graduates in the New York register, Ross Michael Leff is longer-tenured than 12%.
18 years vs. Columbia Law School alumni
Years since admission - 4,784 NY-registered alumni of this school
18 Top 88% higher than 12% of 4,784 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
Columbia Law School's active-bar rate
Of Columbia Law School's 11,650 alumni in the New York register, 78.3% currently hold "Currently registered" status, above the statewide average.
Columbia Law School alumni, active-bar rate
The 2008 admission class today
Of the 9,683 attorneys admitted to the New York bar in 2008, 68.4% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 4641866
- Year Admitted
- 2008 (18 yrs · senior)
- Judicial Department
- 1
- Next Registration
- Apr 2028
Location & Contact
- Company
- Kirkland & Ellis LLP
- City
- New York, NY
- County
- New York
- ZIP Code
- 10022
- Phone
- (212) 446-4947
Education
Status Distribution Across the New York Bar
Ross Michael Leff'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: Kirkland & Ellis LLP
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Columbia Law School alumni
Fellow alumni on the NY register whose admission year is closest to 2008 (excluding same-firm colleagues above).
Same admission year (2008), other cities
NY-registered attorneys admitted in 2008 whose listed office city differs from New York, a vintage cohort, not a neighborhood list.
Verify This Attorney
Verify on NY Courts Attorney SearchNearby Attorneys in New York, NY
Compare credentials side-by-side
Compare Ross Michael Leff with similar attorneys in New York.
Compare attorneys →Before you rely on this record
Ross Michael Leff'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 Ross Leff licensed?
Ross Leff is licensed to practice law in New York.
When was Ross Michael Leff admitted to the bar?
Ross Michael Leff was admitted to the bar in 2008.
Where did Ross Michael Leff go to law school?
Ross Michael Leff attended COLUMBIA LAW SCHOOL.
What company does Ross Michael Leff work for?
Ross Michael Leff is associated with Kirkland & Ellis LLP in New York, NY.
Is Ross Michael Leff in good standing?
Yes, Ross Michael Leff 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.