New York attorney record · Judicial Dept 1
Mark Colburn Williams
Ny Law School alumna, admitted to the New York bar in 1992, registered office in Washington, DC. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1992
- Admitted
- 34
- Years in bar
- 2499432
- NY reg #
The record in one line
With 34 years on the register since a 1992 admission, Mark Colburn Williams ranks among the New York bar's most senior active practitioners, longer-tenured than 71% of the currently-active bar.
- 34 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #1313 of 12,540
- by tenure in Washington office peers
- Law school
- Ny Law School
Data updated September 2026
What this profile tells you
Bar status & tenure
Registration 2499432 with the New York bar authority has long belonged to Mark Colburn Williams, 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 Clifford Chance Us LLP, located in Washington, DC, ZIP 20006. 5 other attorneys share this firm affiliation in the registry. Educational background: NY LAW SCHOOL.
State context & due diligence
After 34 years on the register, Mark Colburn Williams 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 Mark Colburn Williams's 34 years since admission in 1992.
34 years on the New York bar
Years since admission, all currently-active NY attorneys
34 Top 29% higher than 71% 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
Mark Colburn Williams is earlier in the Washington, DC office cohort than most peers: local tenure rank #1,313 of 12,540 (10th percentile). See the Washington attorney directory .
- Local rank
- #1,313
- City cohort
- 12,540
- Local percentile
- 10th
- Admitted
- 1992
Nearest tenure peers in Washington
- Alvaro Jose Aguirre admitted 1992 · 34 yr
- Robert Fredric Altneu admitted 1992 · 34 yr
- Randall Jay Amster admitted 1992 · 34 yr
- Thomas F. Bardo admitted 1992 · 34 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 Mark compares to fellow Ny Law School alumni
Among the 100 Ny Law School graduates in the New York register, Mark Colburn Williams is longer-tenured than 17%.
34 years vs. Ny Law School alumni
Years since admission - 100 NY-registered alumni of this school
34 Top 83% higher than 17% of 100 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 1992 admission class today
Of the 6,498 attorneys admitted to the New York bar in 1992, 59.2% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 2499432
- Year Admitted
- 1992 (34 yrs · veteran)
- Judicial Department
- 1
- Next Registration
- May 2028
Location & Contact
- Company
- Clifford Chance Us LLP
- City
- Washington, DC
- ZIP Code
- 20006
- Phone
- (202) 912-5909
Education
NY LAW SCHOOL
Status Distribution Across the New York Bar
Mark Colburn Williams'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: Clifford Chance Us LLP
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Ny Law School alumni
Fellow alumni on the NY register whose admission year is closest to 1992 (excluding same-firm colleagues above).
Same admission year (1992), other cities
NY-registered attorneys admitted in 1992 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 Mark Colburn Williams: 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 (~1992)
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
Verify This Attorney
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Compare attorneys →Before you rely on this record
Mark Colburn Williams'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 Mark Williams licensed?
Mark Williams is licensed to practice law in New York.
When was Mark Colburn Williams admitted to the bar?
Mark Colburn Williams's admission to the New York bar dates back to 1992.
Where did Mark Colburn Williams go to law school?
Mark Colburn Williams attended NY LAW SCHOOL.
What company does Mark Colburn Williams work for?
Mark Colburn Williams is associated with Clifford Chance Us LLP in Washington, DC.
Is Mark Colburn Williams in good standing?
Yes, Mark Colburn Williams 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.