New York attorney record · Judicial Dept 1
Brian Thomas Marsh Mammarella
University Of Virginia School Of Law alumna, admitted to the New York bar in 2017, registered office in Wilmington, DE. This record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2017
- Admitted
- 9
- Years in bar
- 5485347
- NY reg #
The record in one line
Admitted in 2017, Brian Thomas Marsh Mammarella has built 9 years of active New York practice - more tenure than 13% of the state's currently-active attorneys.
- 9 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #279 of 370
- by tenure in Wilmington office peers
- Law school
- University Of Virginia School Of Law
Data updated September 2026
What this profile tells you
Bar status & tenure
Bar number 5485347 on the New York register belongs to Brian Thomas Marsh Mammarella, currently in active 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 Richards, Layton & Finger, P.A., located in Wilmington, DE, ZIP 19801. 5 other attorneys share this firm affiliation in the registry. Educational background: University of Virginia School of Law (5,025 registered alumni).
State context & due diligence
Brian Thomas Marsh Mammarella 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
9 years into an active New York practice since a 2017 admission, Brian Thomas Marsh Mammarella sits here on the statewide experience curve - taller bars hold more attorneys at that experience level.
9 years on the New York bar
Years since admission, all currently-active NY attorneys
9 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 · September 2026
Tenure among Wilmington, DE office peers
Brian Thomas Marsh Mammarella is among the longer-standing NY-bar records in Wilmington, DE: #279 of 370 by years since admission (75th percentile locally). See the Wilmington attorney directory .
- Local rank
- #279
- City cohort
- 370
- Local percentile
- 75th
- Admitted
- 2017
Nearest tenure peers in Wilmington
- Michael Francis Collins admitted 2017 · 9 yr
- Liliana Di Nola-Baron admitted 2017 · 9 yr
- Caroline Riley Herbert admitted 2017 · 9 yr
- Kyle Henry Lachmund admitted 2017 · 9 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 September 2026. Derived local rank, not published upstream.
How Brian compares to fellow University Of Virginia School Of Law alumni
Among the 3,187 University Of Virginia School Of Law graduates in the New York register, Brian Thomas Marsh Mammarella is longer-tenured than 16%.
9 years vs. University Of Virginia School Of Law alumni
Years since admission - 3,187 NY-registered alumni of this school
9 Top 84% higher than 16% of 3,187 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 · September 2026
University Of Virginia School Of Law's active-bar rate
Of University Of Virginia School Of Law's 5,025 alumni in the New York register, 70.7% currently hold "Currently registered" status, above the statewide average.
The 2017 admission class today
Of the 8,202 attorneys admitted to the New York bar in 2017, 93.5% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 5485347
- Year Admitted
- 2017 (9 yrs · mid-career)
- Judicial Department
- 1
- Next Registration
- Dec 2027
Location & Contact
- Company
- Richards, Layton & Finger, P.A.
- City
- Wilmington, DE
- ZIP Code
- 19801
- Phone
- (302) 651-7542
Education
Status Distribution Across the New York Bar
Brian Thomas Marsh Mammarella'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: Richards, Layton & Finger, P.A.
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure University Of Virginia School Of Law alumni
Fellow alumni on the NY register whose admission year is closest to 2017 (excluding same-firm colleagues above).
Same admission year (2017), other cities
NY-registered attorneys admitted in 2017 whose listed office city differs from Wilmington, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Brian Thomas Marsh Mammarella: closest NY bar admission year outside DE, and closest out-of-state office cities by how many NY-registered attorneys they list (~371 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2017)
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 Wilmington, DE
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Compare attorneys →Before you rely on this record
Brian Thomas Marsh Mammarella'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 Brian Mammarella licensed?
Brian Mammarella is licensed to practice law in New York.
When was Brian Thomas Marsh Mammarella admitted to the bar?
Brian Thomas Marsh Mammarella has been on the New York bar register since 2017.
Where did Brian Thomas Marsh Mammarella go to law school?
Brian Thomas Marsh Mammarella attended University of Virginia School of Law.
What company does Brian Thomas Marsh Mammarella work for?
Brian Thomas Marsh Mammarella is associated with Richards, Layton & Finger, P.A. in Wilmington, DE.
Is Brian Thomas Marsh Mammarella in good standing?
Yes, Brian Thomas Marsh Mammarella 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.