New York attorney record · Judicial Dept 2
Mark Alan Siesel
Brooklyn alumna, admitted to the New York bar in 1987, registered office in White Plains, NY. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1987
- Admitted
- 39
- Years in bar
- 2093748
- NY reg #
The record in one line
With 39 years on the register since a 1987 admission, Mark Alan Siesel ranks among the New York bar's most senior active practitioners, longer-tenured than 79% of the currently-active bar.
- 39 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #728 of 3,330
- by tenure in White Plains office peers
- Law school
- Brooklyn
Data updated September 2026
What this profile tells you
Bar status & tenure
Registration 2093748 with the New York bar authority has long belonged to Mark Alan Siesel, a veteran practitioner still in active good standing. Registration is recorded within Judicial Department 2, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under The Law Office Of Mark A. Siesel, located in White Plains, NY (Westchester County), ZIP 10601. Educational background: BROOKLYN.
State context & due diligence
After 39 years on the register, Mark Alan Siesel 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 Alan Siesel's 39 years since admission in 1987.
39 years on the New York bar
Years since admission, all currently-active NY attorneys
39 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 White Plains, NY office peers
Mark Alan Siesel is earlier in the White Plains, NY office cohort than most peers: local tenure rank #728 of 3,330 (22nd percentile). See the White Plains attorney directory .
- Local rank
- #728
- City cohort
- 3,330
- Local percentile
- 22nd
- Admitted
- 1987
Nearest tenure peers in White Plains
- Donna Elise Abrams admitted 1987 · 39 yr
- Robert T. Adams admitted 1987 · 39 yr
- Jordan David Becker admitted 1987 · 39 yr
- Robert M. Bernstein admitted 1987 · 39 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 Brooklyn alumni
Among the 2,688 Brooklyn graduates in the New York register, Mark Alan Siesel is longer-tenured than 71%.
39 years vs. Brooklyn alumni
Years since admission - 2,688 NY-registered alumni of this school
39 Top 29% higher than 71% of 2,688 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 1987 admission class today
Of the 5,948 attorneys admitted to the New York bar in 1987, 73.4% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 2093748
- Year Admitted
- 1987 (39 yrs · veteran)
- Judicial Department
- 2
- Next Registration
- Jan 2027
Location & Contact
- Company
- The Law Office Of Mark A. Siesel
- City
- White Plains, NY
- County
- Westchester
- ZIP Code
- 10601
- Phone
- (914) 428-7386
Education
BROOKLYN
Status Distribution Across the New York Bar
Mark Alan Siesel'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 Brooklyn alumni
Fellow alumni on the NY register whose admission year is closest to 1987 (excluding same-firm colleagues above).
Same admission year (1987), other cities
NY-registered attorneys admitted in 1987 whose listed office city differs from White Plains, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Mark Alan Siesel: closest NY bar admission year outside NY, and closest out-of-state office cities by how many NY-registered attorneys they list (~3,331 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~1987)
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 White Plains, NY
Compare credentials side-by-side
Compare Mark Alan Siesel with similar attorneys in White Plains.
Compare attorneys →Before you rely on this record
Mark Alan Siesel'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 Siesel licensed?
Mark Siesel is licensed to practice law in New York.
When was Mark Alan Siesel admitted to the bar?
Mark Alan Siesel's admission to the New York bar dates back to 1987.
Where did Mark Alan Siesel go to law school?
Mark Alan Siesel attended BROOKLYN.
What company does Mark Alan Siesel work for?
Mark Alan Siesel is associated with The Law Office Of Mark A. Siesel in White Plains, NY.
Is Mark Alan Siesel in good standing?
Yes, Mark Alan Siesel 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.