New York attorney record · Judicial Dept 1
John James Mcdonnell
Columbia Law School alumna, admitted to the New York bar in 2015, registered office in Sleepy Hollow, NY. This record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2015
- Admitted
- 11
- Years in bar
- 5313325
- NY reg #
The record in one line
Admitted in 2015, John James Mcdonnell has built 11 years of active New York practice - more tenure than 25% of the state's currently-active attorneys.
- 11 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #56 of 68
- by tenure in Sleepy Hollow office peers
- Law school
- Columbia Law School
Data updated August 2026
What this profile tells you
Bar status & tenure
Bar number 5313325 on the New York register belongs to John James Mcdonnell, 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 Regeneron Pharmaceuticals, Inc., located in Sleepy Hollow, NY (Westchester County), ZIP 10591. 5 other attorneys share this firm affiliation in the registry. Educational background: Columbia Law School (11,650 registered alumni).
State context & due diligence
John James Mcdonnell 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
11 years into an active New York practice since a 2015 admission, John James Mcdonnell sits here on the statewide experience curve - taller bars hold more attorneys at that experience level.
11 years on the New York bar
Years since admission, all currently-active NY attorneys
11 Top 75% higher than 25% 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 Sleepy Hollow, NY office peers
In Sleepy Hollow, NY's NY-registered cohort of 68, John James Mcdonnell sits at local tenure rank #56 (81st percentile). See the Sleepy Hollow attorney directory .
- Local rank
- #56
- City cohort
- 68
- Local percentile
- 81st
- Admitted
- 2015
Nearest tenure peers in Sleepy Hollow
- Christina Nicole Cerutti admitted 2015 · 11 yr
- Justin Adam Cohen admitted 2015 · 11 yr
- Aleah Rose Vickers admitted 2015 · 11 yr
- Monica Mckinnon Atmeh admitted 2016 · 10 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 John compares to fellow Columbia Law School alumni
Among the 12,124 Columbia Law School graduates in the New York register, John James Mcdonnell is longer-tenured than 38%.
11 years vs. Columbia Law School alumni
Years since admission - 12,124 NY-registered alumni of this school
11 Top 62% higher than 38% of 12,124 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 2015 admission class today
Of the 8,867 attorneys admitted to the New York bar in 2015, 93% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 5313325
- Year Admitted
- 2015 (11 yrs · mid-career)
- Judicial Department
- 1
- Next Registration
- Apr 2027
Location & Contact
- Company
- Regeneron Pharmaceuticals, Inc.
- City
- Sleepy Hollow, NY
- County
- Westchester
- ZIP Code
- 10591
- Phone
- (914) 847-8438
Education
Status Distribution Across the New York Bar
John James Mcdonnell'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: Regeneron Pharmaceuticals, Inc.
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 2015 (excluding same-firm colleagues above).
Same admission year (2015), other cities
NY-registered attorneys admitted in 2015 whose listed office city differs from Sleepy Hollow, a vintage cohort, not a neighborhood list.
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Compare attorneys →Before you rely on this record
John James Mcdonnell'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 John Mcdonnell licensed?
John Mcdonnell is licensed to practice law in New York.
When was John James Mcdonnell admitted to the bar?
John James Mcdonnell has been on the New York bar register since 2015.
Where did John James Mcdonnell go to law school?
John James Mcdonnell attended Columbia Law School.
What company does John James Mcdonnell work for?
John James Mcdonnell is associated with Regeneron Pharmaceuticals, Inc. in Sleepy Hollow, NY.
Is John James Mcdonnell in good standing?
Yes, John James Mcdonnell 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.