New York attorney record · Judicial Dept 2
Sean Patrick O'Sullivan
Brooklyn alumna, admitted to the New York bar in 2001, registered office in Staten Island, NY. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 2001
- Admitted
- 25
- Years in bar
- 3938164
- NY reg #
The record in one line
With 25 years on the register since a 2001 admission, Sean Patrick O'Sullivan ranks among the New York bar's most senior active practitioners, longer-tenured than 62% of the currently-active bar.
- 25 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #621 of 1,107
- by tenure in Staten Island office peers
- Law school
- Brooklyn
Data updated September 2026
What this profile tells you
Bar status & tenure
Registration 3938164 with the New York bar authority has long belonged to Sean Patrick O'Sullivan, 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 Law Office Of Sean P. O'Sullivan, PLLC, located in Staten Island, NY (Richmond County), ZIP 10306. Educational background: BROOKLYN.
State context & due diligence
After 25 years on the register, Sean Patrick O'Sullivan 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 Sean Patrick O'Sullivan's 25 years since admission in 2001.
25 years on the New York bar
Years since admission, all currently-active NY attorneys
25 Top 38% higher than 62% 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 Staten Island, NY office peers
Sean Patrick O'Sullivan's 25-year NY register tenure places mid-pack in Staten Island, NY: rank #621 of 1,107 office peers (56th percentile). See the Staten Island attorney directory .
- Local rank
- #621
- City cohort
- 1,107
- Local percentile
- 56th
- Admitted
- 2001
Nearest tenure peers in Staten Island
- Nicole Marie Ajello-Merlino admitted 2001 · 25 yr
- Joseph Christopher Albanese admitted 2001 · 25 yr
- Robert Anthony Arminante admitted 2001 · 25 yr
- Kelly G Ballinger admitted 2001 · 25 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 Sean compares to fellow Brooklyn alumni
Among the 2,688 Brooklyn graduates in the New York register, Sean Patrick O'Sullivan is longer-tenured than 30%.
25 years vs. Brooklyn alumni
Years since admission - 2,688 NY-registered alumni of this school
25 Top 70% higher than 30% of 2,688 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 2001 admission class today
Of the 7,416 attorneys admitted to the New York bar in 2001, 82.5% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 3938164
- Year Admitted
- 2001 (25 yrs · veteran)
- Judicial Department
- 2
- Next Registration
- Jun 2027
Location & Contact
- Company
- Law Office Of Sean P. O'Sullivan, PLLC
- City
- Staten Island, NY
- County
- Richmond
- ZIP Code
- 10306
- Phone
- (718) 650-4700
Education
BROOKLYN
Status Distribution Across the New York Bar
Sean Patrick O'Sullivan'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.
Near-tenure Brooklyn alumni
Fellow alumni on the NY register whose admission year is closest to 2001 (excluding same-firm colleagues above).
Same admission year (2001), other cities
NY-registered attorneys admitted in 2001 whose listed office city differs from Staten Island, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Sean Patrick O'Sullivan: closest NY bar admission year outside NY, and closest out-of-state office cities by how many NY-registered attorneys they list (~1,108 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2001)
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
Verify This Attorney
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Compare attorneys →Before you rely on this record
Sean Patrick O'Sullivan'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 Sean O'Sullivan licensed?
Sean O'Sullivan is licensed to practice law in New York.
When was Sean Patrick O'Sullivan admitted to the bar?
Sean Patrick O'Sullivan's admission to the New York bar dates back to 2001.
Where did Sean Patrick O'Sullivan go to law school?
Sean Patrick O'Sullivan attended BROOKLYN.
What company does Sean Patrick O'Sullivan work for?
Sean Patrick O'Sullivan is associated with Law Office Of Sean P. O'Sullivan, PLLC in Staten Island, NY.
Is Sean Patrick O'Sullivan in good standing?
Yes, Sean Patrick O'Sullivan 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.