New York attorney record · Judicial Dept 4
Mary M. O'Donnell
Suny Buffalo Law School alumna, admitted to the New York bar in 2009, registered office in Reston, VA. This established record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2009
- Admitted
- 17
- Years in bar
- 4693057
- NY reg #
The record in one line
Mary M. O'Donnell has held an active New York bar license for 17 years - admitted in 2009, longer-tenured than 38% of the state's currently-active attorneys.
- 17 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #81 of 137
- by tenure in Reston office peers
- Law school
- Suny Buffalo Law School
Data updated August 2026
What this profile tells you
Bar status & tenure
Mary M. O'Donnell carries New York bar registration 4693057, an established, active practitioner in good 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 Leidos, located in Reston, VA, ZIP 20190. 4 other attorneys share this firm affiliation in the registry. Educational background: SUNY Buffalo Law School (3,576 registered alumni).
State context & due diligence
With an established practice on record, Mary M. O'Donnell remains inside the New York bar's active cohort - see below for how that share of the register compares.
Experience vs. the active New York bar
Mary M. O'Donnell was admitted in 2009, giving 17 years on the New York register.
17 years on the New York bar
Years since admission, all currently-active NY attorneys
17 Top 62% higher than 38% 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 Reston, VA office peers
Against Reston, VA's 137-attorney NY register cohort, Mary M. O'Donnell lands at the 58th tenure percentile (rank #81). See the Reston attorney directory .
- Local rank
- #81
- City cohort
- 137
- Local percentile
- 58th
- Admitted
- 2009
Nearest tenure peers in Reston
- Frederick Basil Fedynyshyn admitted 2009 · 17 yr
- Gary Anthony Gorske Jr. admitted 2009 · 17 yr
- Justin Graf Castillo admitted 2008 · 18 yr
- Katherine Houren Geder admitted 2010 · 16 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 Mary compares to fellow Suny Buffalo Law School alumni
Among the 4,938 Suny Buffalo Law School graduates in the New York register, Mary M. O'Donnell is longer-tenured than 45%.
17 years vs. Suny Buffalo Law School alumni
Years since admission - 4,938 NY-registered alumni of this school
17 Top 55% higher than 45% of 4,938 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
Suny Buffalo Law School's active-bar rate
Of Suny Buffalo Law School's 3,576 alumni in the New York register, 85.7% currently hold "Currently registered" status, above the statewide average.
The 2009 admission class today
Of the 10,203 attorneys admitted to the New York bar in 2009, 87.4% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 4693057
- Year Admitted
- 2009 (17 yrs · senior)
- Judicial Department
- 4
- Next Registration
- Dec 2027
Location & Contact
- Company
- Leidos
- City
- Reston, VA
- ZIP Code
- 20190
- Phone
- (202) 616-0220
Education
Status Distribution Across the New York Bar
Mary M. O'Donnell'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: Leidos
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Suny Buffalo Law School alumni
Fellow alumni on the NY register whose admission year is closest to 2009 (excluding same-firm colleagues above).
Same admission year (2009), other cities
NY-registered attorneys admitted in 2009 whose listed office city differs from Reston, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Mary M. O'Donnell: closest NY bar admission year outside VA, and closest out-of-state office cities by how many NY-registered attorneys they list (~138 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2009)
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 Reston, VA
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Compare Mary M. O'Donnell with similar attorneys in Reston.
Compare attorneys →Before you rely on this record
Mary M. O'Donnell'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'Donnell licensed?
Mary O'Donnell is licensed to practice law in New York.
When was Mary M. O'Donnell admitted to the bar?
Mary M. O'Donnell was admitted to the bar in 2009.
Where did Mary M. O'Donnell go to law school?
Mary M. O'Donnell attended SUNY Buffalo Law School.
What company does Mary M. O'Donnell work for?
Mary M. O'Donnell is associated with Leidos in Reston, VA.
Is Mary M. O'Donnell in good standing?
Yes, Mary M. O'Donnell 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.