New York attorney record · Judicial Dept 3
Madelyn Demsky Zeylikman
University Of California Berkeley School Of Law alumna, admitted to the New York bar in 2004, registered office in Waltham, MA. This established record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2004
- Admitted
- 22
- Years in bar
- 4197430
- NY reg #
The record in one line
Madelyn Demsky Zeylikman has held an active New York bar license for 22 years - admitted in 2004, longer-tenured than 51% of the state's currently-active attorneys.
- 22 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #51 of 142
- by tenure in Waltham office peers
- Law school
- University Of California Berkeley School Of Law
Data updated September 2026
What this profile tells you
Bar status & tenure
Madelyn Demsky Zeylikman carries New York bar registration 4197430, an established, active practitioner in good standing. Registration is recorded within Judicial Department 3, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Korsana Biosciences, located in Waltham, MA, ZIP 02453. Educational background: University of California Berkeley School of Law.
State context & due diligence
With an established practice on record, Madelyn Demsky Zeylikman remains inside the New York bar's active cohort - see below for how that share of the register compares.
Experience vs. the active New York bar
Madelyn Demsky Zeylikman was admitted in 2004, giving 22 years on the New York register.
22 years on the New York bar
Years since admission, all currently-active NY attorneys
22 Top 49% higher than 51% 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 Waltham, MA office peers
Madelyn Demsky Zeylikman is toward the newer end of Waltham, MA's NY register cohort: #51 of 142 by years since admission. See the Waltham attorney directory .
- Local rank
- #51
- City cohort
- 142
- Local percentile
- 35th
- Admitted
- 2004
Nearest tenure peers in Waltham
- Timothy Evans Mcallister admitted 2004 · 22 yr
- Bobbie Jean Wadsworth admitted 2004 · 22 yr
- Jeremy Micah Bloomenthal admitted 2005 · 21 yr
- Cynthia Liebman Decambre admitted 2005 · 21 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 Madelyn compares to fellow University Of California Berkeley School Of Law alumni
Among the 1,206 University Of California Berkeley School Of Law graduates in the New York register, Madelyn Demsky Zeylikman is longer-tenured than 91%.
22 years vs. University Of California Berkeley School Of Law alumni
Years since admission - 1,206 NY-registered alumni of this school
22 Top 9% higher than 91% of 1,206 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 2004 admission class today
Of the 8,407 attorneys admitted to the New York bar in 2004, 65.2% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 4197430
- Year Admitted
- 2004 (22 yrs · senior)
- Judicial Department
- 3
- Next Registration
- May 2028
Location & Contact
- Company
- Korsana Biosciences
- City
- Waltham, MA
- ZIP Code
- 02453
- Phone
- (781) 516-2325
Education
University of California Berkeley School of Law
Status Distribution Across the New York Bar
Madelyn Demsky Zeylikman'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 University Of California Berkeley School Of Law alumni
Fellow alumni on the NY register whose admission year is closest to 2004 (excluding same-firm colleagues above).
Same admission year (2004), other cities
NY-registered attorneys admitted in 2004 whose listed office city differs from Waltham, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Madelyn Demsky Zeylikman: closest NY bar admission year outside MA, and closest out-of-state office cities by how many NY-registered attorneys they list (~143 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2004)
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
Madelyn Demsky Zeylikman'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 Madelyn Zeylikman licensed?
Madelyn Zeylikman is licensed to practice law in New York.
When was Madelyn Demsky Zeylikman admitted to the bar?
Madelyn Demsky Zeylikman was admitted to the bar in 2004.
Where did Madelyn Demsky Zeylikman go to law school?
Madelyn Demsky Zeylikman attended University of California Berkeley School of Law.
What company does Madelyn Demsky Zeylikman work for?
Madelyn Demsky Zeylikman is associated with Korsana Biosciences in Waltham, MA.
Is Madelyn Demsky Zeylikman in good standing?
Yes, Madelyn Demsky Zeylikman 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.