New York attorney record · Judicial Dept 4
Michael Dean O'Brien
Pa State University Dickinson School Of Law alumna, admitted to the New York bar in 2020, registered office in Rochester, NY. This record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2020
- Admitted
- 6
- Years in bar
- 5758511
- NY reg #
The record in one line
Admitted in 2020, Michael Dean O'Brien has built 6 years of active New York practice - more tenure than 13% of the state's currently-active attorneys.
- 6 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #2017 of 2,355
- by tenure in Rochester office peers
- Law school
- Pa State University Dickinson School Of Law
Data updated August 2026
What this profile tells you
Bar status & tenure
Bar number 5758511 on the New York register belongs to Michael Dean O'Brien, currently in active standing. Registration is recorded within Judicial Department 4, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Duke Law Firm, P.C., located in Rochester, NY (Monroe County), ZIP 14609. 5 other attorneys share this firm affiliation in the registry. Educational background: PA State University Dickinson School of Law (135 registered alumni).
State context & due diligence
Michael Dean O'Brien 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
6 years into an active New York practice since a 2020 admission, Michael Dean O'Brien sits here on the statewide experience curve - taller bars hold more attorneys at that experience level.
6 years on the New York bar
Years since admission, all currently-active NY attorneys
6 Top 87% higher than 13% 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 Rochester, NY office peers
Among the 2,355 NY-registered attorneys with a listed office in Rochester, NY, Michael Dean O'Brien ranks #2,017 by tenure, longer-tenured than 86% of that city cohort. See the Rochester attorney directory .
- Local rank
- #2,017
- City cohort
- 2,355
- Local percentile
- 86th
- Admitted
- 2020
Nearest tenure peers in Rochester
- Sara Elizabeth Adams admitted 2020 · 6 yr
- Paige-Elizabeth Edith Avery admitted 2020 · 6 yr
- Katherine Sarah Blum admitted 2020 · 6 yr
- Sarah Falkson Bothma admitted 2020 · 6 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 Michael compares to fellow Pa State University Dickinson School Of Law alumni
Among the 126 Pa State University Dickinson School Of Law graduates in the New York register, Michael Dean O'Brien is longer-tenured than 15%.
6 years vs. Pa State University Dickinson School Of Law alumni
Years since admission - 126 NY-registered alumni of this school
6 Top 85% higher than 15% of 126 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
Pa State University Dickinson School Of Law's active-bar rate
Of Pa State University Dickinson School Of Law's 135 alumni in the New York register, 80% currently hold "Currently registered" status, above the statewide average.
The 2020 admission class today
Of the 8,276 attorneys admitted to the New York bar in 2020, 75.4% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 5758511
- Year Admitted
- 2020 (6 yrs · mid-career)
- Judicial Department
- 4
- Next Registration
- Feb 2028
Location & Contact
- Company
- Duke Law Firm, P.C.
- City
- Rochester, NY
- County
- Monroe
- ZIP Code
- 14609
- Phone
- (585) 346-3220
Status Distribution Across the New York Bar
Michael Dean O'Brien'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: Duke Law Firm, P.C.
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Pa State University Dickinson School Of Law alumni
Fellow alumni on the NY register whose admission year is closest to 2020 (excluding same-firm colleagues above).
Same admission year (2020), other cities
NY-registered attorneys admitted in 2020 whose listed office city differs from Rochester, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Michael Dean O'Brien: closest NY bar admission year outside NY, and closest out-of-state office cities by how many NY-registered attorneys they list (~2,356 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2020)
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
Michael Dean 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 Michael O'Brien licensed?
Michael O'Brien is licensed to practice law in New York.
When was Michael Dean O'Brien admitted to the bar?
Michael Dean O'Brien has been on the New York bar register since 2020.
Where did Michael Dean O'Brien go to law school?
Michael Dean O'Brien attended PA State University Dickinson School of Law.
What company does Michael Dean O'Brien work for?
Michael Dean O'Brien is associated with Duke Law Firm, P.C. in Rochester, NY.
Is Michael Dean O'Brien in good standing?
Yes, Michael Dean O'Brien 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.