New York attorney record · Judicial Dept 1
Marshall Guiboa
Cornell Law School alumna, admitted to the New York bar in 2016, registered office in Brooklyn, NY. This record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2016
- Admitted
- 10
- Years in bar
- 5445622
- NY reg #
The record in one line
Admitted in 2016, Marshall Guiboa has built 10 years of active New York practice - more tenure than 25% of the state's currently-active attorneys.
- 10 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #5386 of 7,282
- by tenure in Brooklyn office peers
- Law school
- Cornell Law School
Data updated September 2026
What this profile tells you
Bar status & tenure
Bar number 5445622 on the New York register belongs to Marshall Guiboa, 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 Brooklyn Defender Services, located in Brooklyn, NY (Kings County), ZIP 11201. 5 other attorneys share this firm affiliation in the registry. Educational background: Cornell Law School (8,118 registered alumni).
State context & due diligence
Marshall Guiboa 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
10 years into an active New York practice since a 2016 admission, Marshall Guiboa sits here on the statewide experience curve - taller bars hold more attorneys at that experience level.
10 years on the New York bar
Years since admission, all currently-active NY attorneys
10 Top 75% higher than 25% 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 Brooklyn, NY office peers
Marshall Guiboa's 10-year NY register tenure places mid-pack in Brooklyn, NY: rank #5,386 of 7,282 office peers (74th percentile). See the Brooklyn attorney directory .
- Local rank
- #5,386
- City cohort
- 7,282
- Local percentile
- 74th
- Admitted
- 2016
Nearest tenure peers in Brooklyn
- Joseph Dominic Addabbo admitted 2016 · 10 yr
- Joam Alisme admitted 2016 · 10 yr
- Rosmil Almonte admitted 2016 · 10 yr
- Adam Amir admitted 2016 · 10 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 Marshall compares to fellow Cornell Law School alumni
Among the 4,487 Cornell Law School graduates in the New York register, Marshall Guiboa is longer-tenured than 39%.
10 years vs. Cornell Law School alumni
Years since admission - 4,487 NY-registered alumni of this school
10 Top 61% higher than 39% of 4,487 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
Cornell Law School's active-bar rate
Of Cornell Law School's 8,118 alumni in the New York register, 65.1% currently hold "Currently registered" status, below the statewide average.
The 2016 admission class today
Of the 8,420 attorneys admitted to the New York bar in 2016, 72.9% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 5445622
- Year Admitted
- 2016 (10 yrs · mid-career)
- Judicial Department
- 1
- Next Registration
- Oct 2026
Location & Contact
- Company
- Brooklyn Defender Services
- City
- Brooklyn, NY
- County
- Kings
- ZIP Code
- 11201
- Phone
- (718) 254-0700
Education
Status Distribution Across the New York Bar
Marshall Guiboa'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: Brooklyn Defender Services
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Cornell Law School alumni
Fellow alumni on the NY register whose admission year is closest to 2016 (excluding same-firm colleagues above).
Same admission year (2016), other cities
NY-registered attorneys admitted in 2016 whose listed office city differs from Brooklyn, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Marshall Guiboa: closest NY bar admission year outside NY, and closest out-of-state office cities by how many NY-registered attorneys they list (~7,283 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2016)
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 Brooklyn, NY
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Compare attorneys →Before you rely on this record
Marshall Guiboa'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 Marshall Guiboa licensed?
Marshall Guiboa is licensed to practice law in New York.
When was Marshall Guiboa admitted to the bar?
Marshall Guiboa has been on the New York bar register since 2016.
Where did Marshall Guiboa go to law school?
Marshall Guiboa attended Cornell Law School.
What company does Marshall Guiboa work for?
Marshall Guiboa is associated with Brooklyn Defender Services in Brooklyn, NY.
Is Marshall Guiboa in good standing?
Yes, Marshall Guiboa 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.