New York attorney record · Judicial Dept 1
Louis Thomas Petrillo
Columbia Law alumna, admitted to the New York bar in 1992, registered office in White Plains, 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
- 2482925
- NY reg #
The record in one line
With 34 years on the register since a 1992 admission, Louis Thomas Petrillo 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"
- #1090 of 3,330
- by tenure in White Plains office peers
- Law school
- Columbia Law
Data updated September 2026
What this profile tells you
Bar status & tenure
Registration 2482925 with the New York bar authority has long belonged to Louis Thomas Petrillo, 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 Arch Capital Services LLC, located in White Plains, NY (Westchester County), ZIP 10601. 3 other attorneys share this firm affiliation in the registry. Educational background: COLUMBIA LAW.
State context & due diligence
After 34 years on the register, Louis Thomas Petrillo 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 Louis Thomas Petrillo's 34 years since admission in 1992.
34 years on the New York bar
Years since admission, all currently-active NY attorneys
34 Top 29% higher than 71% 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 White Plains, NY office peers
Louis Thomas Petrillo is earlier in the White Plains, NY office cohort than most peers: local tenure rank #1,090 of 3,330 (33rd percentile). See the White Plains attorney directory .
- Local rank
- #1,090
- City cohort
- 3,330
- Local percentile
- 33rd
- Admitted
- 1992
Nearest tenure peers in White Plains
- Lori Ann Alesio admitted 1992 · 34 yr
- Nicholas P. Barone admitted 1992 · 34 yr
- Nathan Mark Barotz admitted 1992 · 34 yr
- Beverly Michelle Barr admitted 1992 · 34 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 Louis compares to fellow Columbia Law alumni
Among the 64 Columbia Law graduates in the New York register, Louis Thomas Petrillo is longer-tenured than 67%.
34 years vs. Columbia Law alumni
Years since admission - 64 NY-registered alumni of this school
34 Top 33% higher than 67% of 64 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
The 1992 admission class today
Of the 6,498 attorneys admitted to the New York bar in 1992, 59.2% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 2482925
- Year Admitted
- 1992 (34 yrs · veteran)
- Judicial Department
- 1
- Next Registration
- Jan 2028
Location & Contact
- Company
- Arch Capital Services LLC
- City
- White Plains, NY
- County
- Westchester
- ZIP Code
- 10601
- Phone
- (914) 872-3610
Education
COLUMBIA LAW
Status Distribution Across the New York Bar
Louis Thomas Petrillo'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: Arch Capital Services LLC
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Columbia Law alumni
Fellow alumni on the NY register whose admission year is closest to 1992 (excluding same-firm colleagues above).
Same admission year (1992), other cities
NY-registered attorneys admitted in 1992 whose listed office city differs from White Plains, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Louis Thomas Petrillo: closest NY bar admission year outside NY, and closest out-of-state office cities by how many NY-registered attorneys they list (~3,331 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~1992)
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
Louis Thomas Petrillo'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 Louis Petrillo licensed?
Louis Petrillo is licensed to practice law in New York.
When was Louis Thomas Petrillo admitted to the bar?
Louis Thomas Petrillo's admission to the New York bar dates back to 1992.
Where did Louis Thomas Petrillo go to law school?
Louis Thomas Petrillo attended COLUMBIA LAW.
What company does Louis Thomas Petrillo work for?
Louis Thomas Petrillo is associated with Arch Capital Services LLC in White Plains, NY.
Is Louis Thomas Petrillo in good standing?
Yes, Louis Thomas Petrillo 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.