New York attorney record · Judicial Dept 1
David Peter Kassebaum
Columbia University School Of Law alumna, admitted to the New York bar in 2001, registered office in Washington, DC. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 2001
- Admitted
- 25
- Years in bar
- 3944402
- NY reg #
The record in one line
With 25 years on the register since a 2001 admission, David Peter Kassebaum ranks among the New York bar's most senior active practitioners, longer-tenured than 62% of the currently-active bar.
- 25 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #3082 of 12,540
- by tenure in Washington office peers
- Law school
- Columbia University School Of Law
Data updated September 2026
What this profile tells you
Bar status & tenure
Registration 3944402 with the New York bar authority has long belonged to David Peter Kassebaum, 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 Millennium Challenge Corporation, located in Washington, DC, ZIP 20005. 4 other attorneys share this firm affiliation in the registry. Educational background: Columbia University School of Law.
State context & due diligence
After 25 years on the register, David Peter Kassebaum 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 David Peter Kassebaum's 25 years since admission in 2001.
25 years on the New York bar
Years since admission, all currently-active NY attorneys
25 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 · September 2026
Tenure among Washington, DC office peers
David Peter Kassebaum is earlier in the Washington, DC office cohort than most peers: local tenure rank #3,082 of 12,540 (25th percentile). See the Washington attorney directory .
- Local rank
- #3,082
- City cohort
- 12,540
- Local percentile
- 25th
- Admitted
- 2001
Nearest tenure peers in Washington
- David C. Aaron admitted 2001 · 25 yr
- Marissa Leigh Alcala admitted 2001 · 25 yr
- Maristella Aldana admitted 2001 · 25 yr
- Leslie David Alderman Iii admitted 2001 · 25 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 David compares to fellow Columbia University School Of Law alumni
Among the 59 Columbia University School Of Law graduates in the New York register, David Peter Kassebaum is longer-tenured than 47%.
25 years vs. Columbia University School Of Law alumni
Years since admission - 59 NY-registered alumni of this school
25 Top 53% higher than 47% of 59 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 2001 admission class today
Of the 7,416 attorneys admitted to the New York bar in 2001, 82.5% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 3944402
- Year Admitted
- 2001 (25 yrs · veteran)
- Judicial Department
- 1
- Next Registration
- Jan 2027
Location & Contact
- Company
- Millennium Challenge Corporation
- City
- Washington, DC
- ZIP Code
- 20005
- Phone
- (202) 521-3892
Education
Columbia University School of Law
Status Distribution Across the New York Bar
David Peter Kassebaum'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: Millennium Challenge Corporation
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Columbia University School Of Law alumni
Fellow alumni on the NY register whose admission year is closest to 2001 (excluding same-firm colleagues above).
Same admission year (2001), other cities
NY-registered attorneys admitted in 2001 whose listed office city differs from Washington, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for David Peter Kassebaum: closest NY bar admission year outside DC, and closest out-of-state office cities by how many NY-registered attorneys they list (~12,541 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2001)
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
David Peter Kassebaum'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 David Kassebaum licensed?
David Kassebaum is licensed to practice law in New York.
When was David Peter Kassebaum admitted to the bar?
David Peter Kassebaum's admission to the New York bar dates back to 2001.
Where did David Peter Kassebaum go to law school?
David Peter Kassebaum attended Columbia University School of Law.
What company does David Peter Kassebaum work for?
David Peter Kassebaum is associated with Millennium Challenge Corporation in Washington, DC.
Is David Peter Kassebaum in good standing?
Yes, David Peter Kassebaum 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.