New York attorney record · Judicial Dept 2
Thomas Mark Lewyn
Columbia alumna, admitted to the New York bar in 1957, registered office in New York, NY. A half-lifetime's worth of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1957
- Admitted
- 69
- Years in bar
- 1096593
- NY reg #
The record in one line
Thomas Mark Lewyn has spent 69 years on the register since admission in 1957, one of the longest-standing active practitioners the state bar carries at 99% tenure percentile.
- 69 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #58 of 93,608
- by tenure in New York office peers
- Law school
- Columbia
Data updated September 2026
What this profile tells you
Bar status & tenure
Thomas Mark Lewyn has carried New York bar registration 1096593 for the better part of a career, still active and in 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 Simpson Thacher & Bartlett, located in New York, NY (New York County), ZIP 10017. 5 other attorneys share this firm affiliation in the registry. Educational background: COLUMBIA.
State context & due diligence
Across a career spanning 69 years, Thomas Mark Lewyn has remained part of the New York bar's active cohort, a share of the register detailed further below.
Experience vs. the active New York bar
Thomas Mark Lewyn's 69 years since a 1957 admission places this record near the far edge of the statewide tenure curve below.
69 years on the New York bar
Years since admission, all currently-active NY attorneys
69 Top 1% higher than 99% 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 New York, NY office peers
Thomas Mark Lewyn is earlier in the New York, NY office cohort than most peers: local tenure rank #58 of 93,608 (0th percentile). See the New York attorney directory .
- Local rank
- #58
- City cohort
- 93,608
- Local percentile
- 0th
- Admitted
- 1957
Nearest tenure peers in New York
- Mal Livingston Barasch admitted 1957 · 69 yr
- Irving Bizar admitted 1957 · 69 yr
- Seymour Floyd Corenthal admitted 1957 · 69 yr
- Sanford H. Goldberg admitted 1957 · 69 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 Thomas compares to fellow Columbia alumni
Among the 2,448 Columbia graduates in the New York register, Thomas Mark Lewyn is longer-tenured than 99%.
69 years vs. Columbia alumni
Years since admission - 2,448 NY-registered alumni of this school
69 Top 1% higher than 99% of 2,448 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 1957 admission class today
Of the 1,265 attorneys admitted to the New York bar in 1957, 2.4% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 1096593
- Year Admitted
- 1957 (69 yrs · veteran)
- Judicial Department
- 2
- Next Registration
- Jul 2028
Location & Contact
- Company
- Simpson Thacher & Bartlett
- City
- New York, NY
- County
- New York
- ZIP Code
- 10017
- Phone
- (212) 455-2000
Education
COLUMBIA
Status Distribution Across the New York Bar
Thomas Mark Lewyn'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: Simpson Thacher & Bartlett
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Columbia alumni
Fellow alumni on the NY register whose admission year is closest to 1957 (excluding same-firm colleagues above).
Same admission year (1957), other cities
NY-registered attorneys admitted in 1957 whose listed office city differs from New York, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Thomas Mark Lewyn: closest NY bar admission year outside NY, and closest out-of-state office cities by how many NY-registered attorneys they list (~93,609 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~1957)
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
Thomas Mark Lewyn'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 Thomas Lewyn licensed?
Thomas Lewyn is licensed to practice law in New York.
When was Thomas Mark Lewyn admitted to the bar?
Thomas Mark Lewyn's admission to the New York bar dates back to 1957.
Where did Thomas Mark Lewyn go to law school?
Thomas Mark Lewyn attended COLUMBIA.
What company does Thomas Mark Lewyn work for?
Thomas Mark Lewyn is associated with Simpson Thacher & Bartlett in New York, NY.
Is Thomas Mark Lewyn in good standing?
Yes, Thomas Mark Lewyn 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.