New York attorney record · Judicial Dept 2
Mary Kerin O'Neill
Maurice A. Deane School Of Law At Hofstra Univ alumna, admitted to the New York bar in 2016, registered office in Stony Brook, NY. This record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2016
- Admitted
- 10
- Years in bar
- 5442371
- NY reg #
The record in one line
Admitted in 2016, Mary Kerin O'Neill has built 10 years of active New York practice - more tenure than 25% of the state's currently-active attorneys.
- 10 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #60 of 71
- by tenure in Stony Brook office peers
- Law school
- Maurice A. Deane School Of Law At Hofstra Univ
Data updated August 2026
What this profile tells you
Bar status & tenure
Bar number 5442371 on the New York register belongs to Mary Kerin O'Neill, currently in active 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 Mary Kerin O'Neill, P.C., located in Stony Brook, NY (Suffolk County), ZIP 11790. Educational background: MAURICE A. DEANE SCHOOL OF LAW AT HOFSTRA UNIV.
State context & due diligence
Mary Kerin O'Neill 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
10 years into an active New York practice since a 2016 admission, Mary Kerin O'Neill sits here on the statewide experience curve - taller bars hold more attorneys at that experience level.
10 years on the New York bar
Years since admission, all currently-active NY attorneys
10 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 Stony Brook, NY office peers
In Stony Brook, NY's NY-registered cohort of 71, Mary Kerin O'Neill sits at local tenure rank #60 (83rd percentile). See the Stony Brook attorney directory .
- Local rank
- #60
- City cohort
- 71
- Local percentile
- 83rd
- Admitted
- 2016
Nearest tenure peers in Stony Brook
- Alyse Marie Delle Fave admitted 2016 · 10 yr
- Adam Michael Derosa admitted 2016 · 10 yr
- Stefan Louis Josephs admitted 2016 · 10 yr
- Janine Lucia Kapp 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.
The 2016 admission class today
Of the 8,420 attorneys admitted to the New York bar in 2016, 72.9% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 5442371
- Year Admitted
- 2016 (10 yrs · mid-career)
- Judicial Department
- 2
- Next Registration
- Aug 2028
Location & Contact
- Company
- Mary Kerin O'Neill, P.C.
- City
- Stony Brook, NY
- County
- Suffolk
- ZIP Code
- 11790
- Phone
- (631) 235-8914
Education
MAURICE A. DEANE SCHOOL OF LAW AT HOFSTRA UNIV
Status Distribution Across the New York Bar
Mary Kerin O'Neill'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 admission year (2016), other cities
NY-registered attorneys admitted in 2016 whose listed office city differs from Stony Brook, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Mary Kerin O'Neill: closest NY bar admission year outside NY, and closest out-of-state office cities by how many NY-registered attorneys they list (~72 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2016)
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
Verify This Attorney
Verify on NY Courts Attorney SearchNearby Attorneys in Stony Brook, NY
Compare credentials side-by-side
Compare Mary Kerin O'Neill with similar attorneys in Stony Brook.
Compare attorneys →Before you rely on this record
Mary Kerin O'Neill'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 Mary O'Neill licensed?
Mary O'Neill is licensed to practice law in New York.
When was Mary Kerin O'Neill admitted to the bar?
Mary Kerin O'Neill has been on the New York bar register since 2016.
Where did Mary Kerin O'Neill go to law school?
Mary Kerin O'Neill attended MAURICE A. DEANE SCHOOL OF LAW AT HOFSTRA UNIV.
What company does Mary Kerin O'Neill work for?
Mary Kerin O'Neill is associated with Mary Kerin O'Neill, P.C. in Stony Brook, NY.
Is Mary Kerin O'Neill in good standing?
Yes, Mary Kerin O'Neill 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.