New York attorney record · Judicial Dept 1
Daniel Thomas Mongan
Univ Of Pennsylvania alumna, admitted to the New York bar in 1991, registered office in Amagansett, NY. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1991
- Admitted
- 35
- Years in bar
- 2424661
- NY reg #
The record in one line
With 35 years on the register since a 1991 admission, Daniel Thomas Mongan ranks among the New York bar's most senior active practitioners, longer-tenured than 79% of the currently-active bar.
- 35 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #13 of 25
- by tenure in Amagansett office peers
- Law school
- Univ Of Pennsylvania
Data updated September 2026
What this profile tells you
Bar status & tenure
Registration 2424661 with the New York bar authority has long belonged to Daniel Thomas Mongan, 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 D.T. Mongan, located in Amagansett, NY (Suffolk County), ZIP 11930. Educational background: UNIV OF PENNSYLVANIA.
State context & due diligence
After 35 years on the register, Daniel Thomas Mongan 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 Daniel Thomas Mongan's 35 years since admission in 1991.
35 years on the New York bar
Years since admission, all currently-active NY attorneys
35 Top 21% higher than 79% 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 Amagansett, NY office peers
In the small Amagansett, NY cohort (25 with admission years), Daniel Thomas Mongan ranks #13 by tenure. See the Amagansett attorney directory .
- Local rank
- #13
- City cohort
- 25
- Local percentile
- 48th
- Admitted
- 1991
Nearest tenure peers in Amagansett
- Alan Marc Rifkin admitted 1991 · 35 yr
- Lisa Rose Rana admitted 1992 · 34 yr
- Celia Maud Josephson admitted 1988 · 38 yr
- Randolph David Lerner admitted 1988 · 38 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 Daniel compares to fellow Univ Of Pennsylvania alumni
Among the 629 Univ Of Pennsylvania graduates in the New York register, Daniel Thomas Mongan is longer-tenured than 50%.
35 years vs. Univ Of Pennsylvania alumni
Years since admission - 629 NY-registered alumni of this school
35 Top 50% higher than 50% of 629 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
The 1991 admission class today
Of the 6,456 attorneys admitted to the New York bar in 1991, 75.3% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 2424661
- Year Admitted
- 1991 (35 yrs · veteran)
- Judicial Department
- 1
- Next Registration
- Sep 2027
Location & Contact
- Company
- D.T. Mongan
- City
- Amagansett, NY
- County
- Suffolk
- ZIP Code
- 11930
- Phone
- (917) 453-5514
Education
UNIV OF PENNSYLVANIA
Status Distribution Across the New York Bar
Daniel Thomas Mongan'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.
Near-tenure Univ Of Pennsylvania alumni
Fellow alumni on the NY register whose admission year is closest to 1991 (excluding same-firm colleagues above).
Same admission year (1991), other cities
NY-registered attorneys admitted in 1991 whose listed office city differs from Amagansett, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Daniel Thomas Mongan: closest NY bar admission year outside NY, and closest out-of-state office cities by how many NY-registered attorneys they list (~26 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~1991)
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
Daniel Thomas Mongan'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 Daniel Mongan licensed?
Daniel Mongan is licensed to practice law in New York.
When was Daniel Thomas Mongan admitted to the bar?
Daniel Thomas Mongan's admission to the New York bar dates back to 1991.
Where did Daniel Thomas Mongan go to law school?
Daniel Thomas Mongan attended UNIV OF PENNSYLVANIA.
What company does Daniel Thomas Mongan work for?
Daniel Thomas Mongan is associated with D.T. Mongan in Amagansett, NY.
Is Daniel Thomas Mongan in good standing?
Yes, Daniel Thomas Mongan 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.