New York attorney record · Judicial Dept 2
Leonard B. Mackey
Stanford Law School alumna, admitted to the New York bar in 1976, registered office in New York, NY. A half-lifetime's worth of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1976
- Admitted
- 50
- Years in bar
- 1321504
- NY reg #
The record in one line
Leonard B. Mackey has spent 50 years on the register since admission in 1976, one of the longest-standing active practitioners the state bar carries at 96% tenure percentile.
- 50 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #2930 of 93,608
- by tenure in New York office peers
- Law school
- Stanford Law School
Data updated September 2026
What this profile tells you
Bar status & tenure
Leonard B. Mackey has carried New York bar registration 1321504 for the better part of a career, still active and in 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 Clifford Chance, located in New York, NY (New York County), ZIP 10001. 5 other attorneys share this firm affiliation in the registry. Educational background: Stanford Law School (1,500 registered alumni).
State context & due diligence
Across a career spanning 50 years, Leonard B. Mackey has remained part of the New York bar's active cohort, a share of the register detailed further below.
Experience vs. the active New York bar
Leonard B. Mackey's 50 years since a 1976 admission places this record near the far edge of the statewide tenure curve below.
50 years on the New York bar
Years since admission, all currently-active NY attorneys
50 Top 4% higher than 96% 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 New York, NY office peers
Leonard B. Mackey is earlier in the New York, NY office cohort than most peers: local tenure rank #2,930 of 93,608 (3rd percentile). See the New York attorney directory .
- Local rank
- #2,930
- City cohort
- 93,608
- Local percentile
- 3rd
- Admitted
- 1976
Nearest tenure peers in New York
- Nathan Abramowitz admitted 1976 · 50 yr
- Beryl Ann Abrams admitted 1976 · 50 yr
- Paul J. Acinapura admitted 1976 · 50 yr
- Judith A. Ackerman admitted 1976 · 50 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.
How Leonard compares to fellow Stanford Law School alumni
Among the 1,222 Stanford Law School graduates in the New York register, Leonard B. Mackey is longer-tenured than 99%.
50 years vs. Stanford Law School alumni
Years since admission - 1,222 NY-registered alumni of this school
50 Top 1% higher than 99% of 1,222 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 · September 2026
Stanford Law School's active-bar rate
Of Stanford Law School's 1,500 alumni in the New York register, 81.6% currently hold "Currently registered" status, above the statewide average.
The 1976 admission class today
Of the 3,226 attorneys admitted to the New York bar in 1976, 50.2% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 1321504
- Year Admitted
- 1976 (50 yrs · veteran)
- Judicial Department
- 2
- Next Registration
- Dec 2026
Location & Contact
- Company
- Clifford Chance
- City
- New York, NY
- County
- New York
- ZIP Code
- 10001
- Phone
- (203) 253-5090
Education
Status Distribution Across the New York Bar
Leonard B. Mackey'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: Clifford Chance
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Stanford Law School alumni
Fellow alumni on the NY register whose admission year is closest to 1976 (excluding same-firm colleagues above).
Same admission year (1976), other cities
NY-registered attorneys admitted in 1976 whose listed office city differs from New York, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Leonard B. Mackey: closest NY bar admission year outside NY, and closest out-of-state office cities by how many NY-registered attorneys they list (~93,609 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~1976)
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
Leonard B. Mackey'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 Leonard Mackey licensed?
Leonard Mackey is licensed to practice law in New York.
When was Leonard B. Mackey admitted to the bar?
Leonard B. Mackey's admission to the New York bar dates back to 1976.
Where did Leonard B. Mackey go to law school?
Leonard B. Mackey attended Stanford Law School.
What company does Leonard B. Mackey work for?
Leonard B. Mackey is associated with Clifford Chance in New York, NY.
Is Leonard B. Mackey in good standing?
Yes, Leonard B. Mackey 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.