New York attorney record · Judicial Dept 2
Kenneth Jay Leff
Washington University alumna, admitted to the New York bar in 1992, registered office in Melville, NY. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1992
- Admitted
- 34
- Years in bar
- 2485068
- NY reg #
The record in one line
With 34 years on the register since a 1992 admission, Kenneth Jay Leff ranks among the New York bar's most senior active practitioners, longer-tenured than 71% of the currently-active bar.
- 34 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- Top 29%
- by tenure among active NY attorneys
- Law school
- Washington University
Data updated May 2026
What this profile tells you
Bar status & tenure
Registration 2485068 with the New York bar authority has long belonged to Kenneth Jay Leff, a veteran practitioner still in active good standing. Registration is recorded within Judicial Department 2, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Kenneth J Leff, Esq., located in Melville, NY (Suffolk County), ZIP 11747. Educational background: WASHINGTON UNIVERSITY (422 registered alumni).
State context & due diligence
After 34 years on the register, Kenneth Jay Leff 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 Kenneth Jay Leff's 34 years since admission in 1992. The histogram plots that tenure against every currently-active attorney in the state.
34 years on the New York bar
Years since admission, all currently-active NY attorneys
34 Top 29% higher than 71% of 284,296 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 · May 2026
How Kenneth compares to fellow Washington University alumni
Among the 282 Washington University graduates in the New York register, Kenneth Jay Leff is longer-tenured than 78% - a school-cohort view of experience, alongside the statewide one above.
34 years vs. Washington University alumni
Years since admission - 282 NY-registered alumni of this school
34 Top 22% higher than 78% of 282 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 · May 2026
Washington University's active-bar rate
Of Washington University's 422 alumni in the New York register, 67.1% currently hold "Currently registered" status, above the statewide average.
Washington University alumni, active-bar rate
The 1992 admission class today
Of the 6,497 attorneys admitted to the New York bar in 1992, 60.5% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 2485068
- Year Admitted
- 1992 (34 yrs · veteran)
- Judicial Department
- 2
- Next Registration
- Sep 2026
Location & Contact
- Company
- Kenneth J Leff, Esq.
- City
- Melville, NY
- County
- Suffolk
- ZIP Code
- 11747
- Phone
- (631) 431-5344
Education
Status Distribution Across the New York Bar
Kenneth Jay Leff's current status, "Currently registered", places this attorney in the 66.2% of the 429,620-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.
Verify This Attorney
Verify on NY Courts Attorney SearchNearby Attorneys in Melville, NY
Compare credentials side-by-side
Compare Kenneth Jay Leff with similar attorneys in Melville.
Compare attorneys →Before you rely on this record
Kenneth Jay 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 Kenneth Leff licensed?
Kenneth Leff is licensed to practice law in New York.
When was Kenneth Jay Leff admitted to the bar?
Kenneth Jay Leff's admission to the New York bar dates back to 1992.
Where did Kenneth Jay Leff go to law school?
Kenneth Jay Leff attended WASHINGTON UNIVERSITY.
What company does Kenneth Jay Leff work for?
Kenneth Jay Leff is associated with Kenneth J Leff, Esq. in Melville, NY.
Is Kenneth Jay Leff in good standing?
Yes, Kenneth Jay Leff holds active bar status ("Currently registered").
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.