New York attorney record · Judicial Dept 2
Dennis J. O'Sullivan
New York Law School alumna, admitted to the New York bar in 1990, registered office in Bayside, NY. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1990
- Admitted
- 36
- Years in bar
- 2275162
- NY reg #
The record in one line
Dennis J. O'Sullivan appears in the New York attorney register with a current status of "Due to reregister within 30 days of birthday", on record since 1990 - an administrative designation rather than discipline, but confirm current standing with the state bar.
- 36 yrs
- since first admission to the bar
- Pending-renewal
- current bar status: "Due to reregister within 30 days of birthday"
- #70 of 183
- by tenure in Bayside office peers
- Law school
- New York Law School
Data updated August 2026
What this profile tells you
Bar status & tenure
Dennis J. O'Sullivan is registered as bar number 2275162 with the New York bar authority, carrying a current status of "Due to reregister within 30 days of birthday", a routine periodic-renewal reminder, not discipline. 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 Dennis J. Osullivan, P.C., located in Bayside, NY (Queens County), ZIP 11361. Educational background: New York Law School (15,128 registered alumni).
State context & due diligence
A "Due to reregister within 30 days of birthday" status falls outside the New York bar's active cohort for now. The breakdown below shows what share of the register that represents.
Tenure among Bayside, NY office peers
Dennis J. O'Sullivan is toward the newer end of Bayside, NY's NY register cohort: #70 of 183 by years since admission. See the Bayside attorney directory .
- Local rank
- #70
- City cohort
- 183
- Local percentile
- 38th
- Admitted
- 1990
Nearest tenure peers in Bayside
- Raymond Vincent Casey admitted 1990 · 36 yr
- Dennis Bowen Coppin admitted 1990 · 36 yr
- Donna M. Sullivan admitted 1990 · 36 yr
- Nick Base admitted 1991 · 35 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 Dennis compares to fellow New York Law School alumni
Among the 8,212 New York Law School graduates in the New York register, Dennis J. O'Sullivan is longer-tenured than 99%.
36 years vs. New York Law School alumni
Years since admission - 8,212 NY-registered alumni of this school
36 Top 1% higher than 99% of 8,212 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
New York Law School's active-bar rate
Of New York Law School's 15,128 alumni in the New York register, 71% currently hold "Currently registered" status, above the statewide average.
New York Law School alumni, active-bar rate
The 1990 admission class today
Of the 6,112 attorneys admitted to the New York bar in 1990, 56.3% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Due to reregister within 30 days of birthday
- Registration Number
- 2275162
- Year Admitted
- 1990 (36 yrs · veteran)
- Judicial Department
- 2
- Next Registration
- Aug 2026
Location & Contact
- Company
- Law Office Of Dennis J. Osullivan, P.C.
- City
- Bayside, NY
- County
- Queens
- ZIP Code
- 11361
- Phone
- (718) 352-7600
Education
Status Distribution Across the New York Bar
Dennis J. O'Sullivan's current status, "Due to reregister within 30 days of birthday", places this record outside 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 New York Law School alumni
Fellow alumni on the NY register whose admission year is closest to 1990 (excluding same-firm colleagues above).
Same admission year (1990), other cities
NY-registered attorneys admitted in 1990 whose listed office city differs from Bayside, a vintage cohort, not a neighborhood list.
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Compare credentials side-by-side
Compare Dennis J. O'Sullivan with similar attorneys in Bayside.
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Dennis J. O'Sullivan is currently listed as "Due to reregister within 30 days of birthday", treat that as a registration fact to confirm, not a verdict on quality.
Frequently Asked Questions
Where is Dennis O'Sullivan licensed?
Dennis O'Sullivan is licensed to practice law in New York.
When was Dennis J. O'Sullivan admitted to the bar?
Dennis J. O'Sullivan's admission to the New York bar dates back to 1990.
Where did Dennis J. O'Sullivan go to law school?
Dennis J. O'Sullivan attended New York Law School.
What company does Dennis J. O'Sullivan work for?
Dennis J. O'Sullivan is associated with Law Office Of Dennis J. Osullivan, P.C. in Bayside, NY.
Is Dennis J. O'Sullivan in good standing?
Not currently, Dennis J. O'Sullivan's listed status is "Due to reregister within 30 days of birthday", not active standing. Confirm current status with the state bar.
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.