New York attorney record · Judicial Dept 4
Derek Charles Kettner
University At Buffalo alumna, admitted to the New York bar in 2017, registered office in Buffalo, NY. This record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2017
- Admitted
- 9
- Years in bar
- 5477880
- NY reg #
The record in one line
Admitted in 2017, Derek Charles Kettner 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"
- #2635 of 3,464
- by tenure in Buffalo office peers
- Law school
- University At Buffalo
Data updated August 2026
What this profile tells you
Bar status & tenure
Bar number 5477880 on the New York register belongs to Derek Charles Kettner, currently in active standing. Registration is recorded within Judicial Department 4, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Harter Secrest & Emery LLP, located in Buffalo, NY (Erie County), ZIP 14202. 5 other attorneys share this firm affiliation in the registry. Educational background: UNIVERSITY AT BUFFALO (753 registered alumni).
State context & due diligence
Derek Charles Kettner 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, Derek Charles Kettner 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 · August 2026
Tenure among Buffalo, NY office peers
Among the 3,464 NY-registered attorneys with a listed office in Buffalo, NY, Derek Charles Kettner ranks #2,635 by tenure, longer-tenured than 76% of that city cohort. See the Buffalo attorney directory .
- Local rank
- #2,635
- City cohort
- 3,464
- Local percentile
- 76th
- Admitted
- 2017
Nearest tenure peers in Buffalo
- Meaghan Phelan Alleyne admitted 2017 · 9 yr
- Umberto Nicodemo Angilletta admitted 2017 · 9 yr
- Catherine Dolores Aughey admitted 2017 · 9 yr
- Mary K. Bimont 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 August 2026. Derived local rank, not published upstream.
How Derek compares to fellow University At Buffalo alumni
Among the 712 University At Buffalo graduates in the New York register, Derek Charles Kettner is longer-tenured than 0%.
9 years vs. University At Buffalo alumni
Years since admission - 712 NY-registered alumni of this school
9 Top 100% higher than 0% of 712 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
University At Buffalo's active-bar rate
Of University At Buffalo's 753 alumni in the New York register, 79.5% 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
- 5477880
- Year Admitted
- 2017 (9 yrs · mid-career)
- Judicial Department
- 4
- Next Registration
- Mar 2027
Location & Contact
- Company
- Harter Secrest & Emery LLP
- City
- Buffalo, NY
- County
- Erie
- ZIP Code
- 14202
- Phone
- (716) 856-4000
Education
Status Distribution Across the New York Bar
Derek Charles Kettner'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: Harter Secrest & Emery LLP
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure University At Buffalo 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 Buffalo, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Derek Charles Kettner: closest NY bar admission year outside NY, and closest out-of-state office cities by how many NY-registered attorneys they list (~3,465 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 Buffalo, NY
Compare credentials side-by-side
Compare Derek Charles Kettner with similar attorneys in Buffalo.
Compare attorneys →Before you rely on this record
Derek Charles Kettner'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 Derek Kettner licensed?
Derek Kettner is licensed to practice law in New York.
When was Derek Charles Kettner admitted to the bar?
Derek Charles Kettner has been on the New York bar register since 2017.
Where did Derek Charles Kettner go to law school?
Derek Charles Kettner attended UNIVERSITY AT BUFFALO.
What company does Derek Charles Kettner work for?
Derek Charles Kettner is associated with Harter Secrest & Emery LLP in Buffalo, NY.
Is Derek Charles Kettner in good standing?
Yes, Derek Charles Kettner 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.