New York attorney record · Judicial Dept 2
Shannon Duignan O'Brien
St. Johns University School Of Law alumna, admitted to the New York bar in 2022, registered office in Garden City South, NY. As a recent entrant to the registry, this record's status, address, and admission date come straight from the NY Office of Court Administration.
- 2022
- Admitted
- 4
- Years in bar
- 5951595
- NY reg #
The record in one line
Shannon Duignan O'Brien is early in an active New York law career - admitted to the bar in 2022 and on active status for 4 years so far, already ahead of 0% of the state's active bar by tenure.
- 4 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- Top 100%
- by tenure among active NY attorneys
- Law school
- St. Johns University School Of Law
Data updated May 2026
What this profile tells you
Bar status & tenure
Shannon Duignan O'Brien holds bar number 5951595 with the New York bar authority, a recent active-status addition to the roll. Registration is recorded within Judicial Department 2, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Mahon, Mahon, Kerins & O'Brien, LLC, located in Garden City South, NY (Nassau County), ZIP 11530. 3 other attorneys share this firm affiliation in the registry. Educational background: St. Johns University School of Law (2,190 registered alumni).
State context & due diligence
As a recent addition to the register, Shannon Duignan O'Brien counts toward the New York bar's active cohort; the breakdown below shows how that group stacks up against the rest of the register.
Experience vs. the active New York bar
Shannon Duignan O'Brien is a recent addition to the active New York bar, admitted in 2022. The histogram below shows where 4 years of tenure falls among every currently-active attorney in the state.
4 years on the New York bar
Years since admission, all currently-active NY attorneys
4 Top 100% higher than 0% of 284,296 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 · May 2026
How Shannon compares to fellow St. Johns University School Of Law alumni
Among the 1,558 St. Johns University School Of Law graduates in the New York register, Shannon Duignan O'Brien is longer-tenured than 0% - a school-cohort view of experience, alongside the statewide one above.
4 years vs. St. Johns University School Of Law alumni
Years since admission - 1,558 NY-registered alumni of this school
4 Top 100% higher than 0% of 1,558 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 · May 2026
St. Johns University School Of Law's active-bar rate
Of St. Johns University School Of Law's 2,190 alumni in the New York register, 78.4% currently hold "Currently registered" status, above the statewide average.
St. Johns University School Of Law alumni, active-bar rate
The 2022 admission class today
Of the 7,736 attorneys admitted to the New York bar in 2022, 75.2% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 5951595
- Year Admitted
- 2022 (4 yrs · early career)
- Judicial Department
- 2
- Next Registration
- Nov 2026
Location & Contact
- Company
- Mahon, Mahon, Kerins & O'Brien, LLC
- County
- Nassau
- ZIP Code
- 11530
- Phone
- (516) 601-0714
Education
Status Distribution Across the New York Bar
Shannon Duignan O'Brien's current status, "Currently registered", places this attorney in the 66.2% of the 429,620-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.
Other Attorneys at Mahon, Mahon, Kerins & O'Brien, LLC
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Compare attorneys →Before you rely on this record
Shannon Duignan O'Brien'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 Shannon O'Brien licensed?
Shannon O'Brien is licensed to practice law in New York.
When was Shannon Duignan O'Brien admitted to the bar?
Shannon Duignan O'Brien was admitted to the New York bar in 2022, 4 years ago.
Where did Shannon Duignan O'Brien go to law school?
Shannon Duignan O'Brien attended St. Johns University School of Law.
What company does Shannon Duignan O'Brien work for?
Shannon Duignan O'Brien is associated with Mahon, Mahon, Kerins & O'Brien, LLC in Garden City South, NY.
Is Shannon Duignan O'Brien in good standing?
Yes, Shannon Duignan O'Brien holds active bar status ("Currently registered").
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.