New York attorney record · Judicial Dept 1
Matthew Mcdonnell Riordan
Indiana University alumna, admitted to the New York bar in 1999, registered office in Monsey, NY. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1999
- Admitted
- 27
- Years in bar
- 2968832
- NY reg #
The record in one line
With 27 years on the register since a 1999 admission, Matthew Mcdonnell Riordan ranks among the New York bar's most senior active practitioners, longer-tenured than 62% of the currently-active bar.
- 27 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #29 of 43
- by tenure in Monsey office peers
- Law school
- Indiana University
Data updated August 2026
What this profile tells you
Bar status & tenure
Registration 2968832 with the New York bar authority has long belonged to Matthew Mcdonnell Riordan, a veteran practitioner still in active good standing. Registration is recorded within Judicial Department 1, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Mbj Law PLLC, located in Monsey, NY (Rockland County), ZIP 10952. 4 other attorneys share this firm affiliation in the registry. Educational background: INDIANA UNIVERSITY (216 registered alumni).
State context & due diligence
After 27 years on the register, Matthew Mcdonnell Riordan still falls within the New York bar's active cohort, a share of the register detailed further below.
Experience vs. the active New York bar
Few active New York attorneys match Matthew Mcdonnell Riordan's 27 years since admission in 1999.
27 years on the New York bar
Years since admission, all currently-active NY attorneys
27 Top 38% higher than 62% 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 Monsey, NY office peers
In the small Monsey, NY cohort (43 with admission years), Matthew Mcdonnell Riordan ranks #29 by tenure. See the Monsey attorney directory .
- Local rank
- #29
- City cohort
- 43
- Local percentile
- 65th
- Admitted
- 1999
Nearest tenure peers in Monsey
- Michael Ben-Jacob admitted 1999 · 27 yr
- Berwin Cohen admitted 2000 · 26 yr
- Jacob Ginsburg admitted 1998 · 28 yr
- Mordecai J. Spiegel admitted 1998 · 28 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 Matthew compares to fellow Indiana University alumni
Among the 154 Indiana University graduates in the New York register, Matthew Mcdonnell Riordan is longer-tenured than 47%.
27 years vs. Indiana University alumni
Years since admission - 154 NY-registered alumni of this school
27 Top 53% higher than 47% of 154 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
Indiana University's active-bar rate
Of Indiana University's 216 alumni in the New York register, 55.1% currently hold "Currently registered" status, below the statewide average.
The 1999 admission class today
Of the 7,628 attorneys admitted to the New York bar in 1999, 81.9% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 2968832
- Year Admitted
- 1999 (27 yrs · veteran)
- Judicial Department
- 1
- Next Registration
- Dec 2027
Location & Contact
- Company
- Mbj Law PLLC
- City
- Monsey, NY
- County
- Rockland
- ZIP Code
- 10952
- Phone
- (914) 292-0230
Education
Status Distribution Across the New York Bar
Matthew Mcdonnell Riordan'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: Mbj Law PLLC
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Indiana University alumni
Fellow alumni on the NY register whose admission year is closest to 1999 (excluding same-firm colleagues above).
Same admission year (1999), other cities
NY-registered attorneys admitted in 1999 whose listed office city differs from Monsey, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Matthew Mcdonnell Riordan: closest NY bar admission year outside NY, and closest out-of-state office cities by how many NY-registered attorneys they list (~44 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~1999)
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
Verify This Attorney
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Compare attorneys →Before you rely on this record
Matthew Mcdonnell Riordan'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 Matthew Riordan licensed?
Matthew Riordan is licensed to practice law in New York.
When was Matthew Mcdonnell Riordan admitted to the bar?
Matthew Mcdonnell Riordan's admission to the New York bar dates back to 1999.
Where did Matthew Mcdonnell Riordan go to law school?
Matthew Mcdonnell Riordan attended INDIANA UNIVERSITY.
What company does Matthew Mcdonnell Riordan work for?
Matthew Mcdonnell Riordan is associated with Mbj Law PLLC in Monsey, NY.
Is Matthew Mcdonnell Riordan in good standing?
Yes, Matthew Mcdonnell Riordan 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.