New York attorney record · Judicial Dept 3
William David Dalsen
University Of Wisconsin Law School alumna, admitted to the New York bar in 2011, registered office in Boston, MA. This established record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2011
- Admitted
- 15
- Years in bar
- 4938924
- NY reg #
The record in one line
William David Dalsen has held an active New York bar license for 15 years - admitted in 2011, longer-tenured than 38% of the state's currently-active attorneys.
- 15 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #1544 of 2,912
- by tenure in Boston office peers
- Law school
- University Of Wisconsin Law School
Data updated August 2026
What this profile tells you
Bar status & tenure
William David Dalsen carries New York bar registration 4938924, 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 Proskauer Rose LLP, located in Boston, MA, ZIP 02110. 5 other attorneys share this firm affiliation in the registry. Educational background: University of Wisconsin Law School (401 registered alumni).
State context & due diligence
With an established practice on record, William David Dalsen 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
William David Dalsen was admitted in 2011, giving 15 years on the New York register.
15 years on the New York bar
Years since admission, all currently-active NY attorneys
15 Top 62% higher than 38% 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 Boston, MA office peers
William David Dalsen's 15-year NY register tenure places mid-pack in Boston, MA: rank #1,544 of 2,912 office peers (53rd percentile). See the Boston attorney directory .
- Local rank
- #1,544
- City cohort
- 2,912
- Local percentile
- 53rd
- Admitted
- 2011
Nearest tenure peers in Boston
- Stephen M. Ahron admitted 2011 · 15 yr
- Caroline Grace Aiello admitted 2011 · 15 yr
- Yaw Asare Anim admitted 2011 · 15 yr
- Stephanie Michelle Aronzon admitted 2011 · 15 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 William compares to fellow University Of Wisconsin Law School alumni
Among the 328 University Of Wisconsin Law School graduates in the New York register, William David Dalsen is longer-tenured than 65%.
15 years vs. University Of Wisconsin Law School alumni
Years since admission - 328 NY-registered alumni of this school
15 Top 35% higher than 65% of 328 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 Of Wisconsin Law School's active-bar rate
Of University Of Wisconsin Law School's 401 alumni in the New York register, 81.5% currently hold "Currently registered" status, above the statewide average.
The 2011 admission class today
Of the 9,856 attorneys admitted to the New York bar in 2011, 88.5% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 4938924
- Year Admitted
- 2011 (15 yrs · senior)
- Judicial Department
- 3
- Next Registration
- Feb 2027
Location & Contact
- Company
- Proskauer Rose LLP
- City
- Boston, MA
- ZIP Code
- 02110
- Phone
- (617) 526-9429
Education
Status Distribution Across the New York Bar
William David Dalsen'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: Proskauer Rose LLP
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure University Of Wisconsin Law School alumni
Fellow alumni on the NY register whose admission year is closest to 2011 (excluding same-firm colleagues above).
Same admission year (2011), other cities
NY-registered attorneys admitted in 2011 whose listed office city differs from Boston, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for William David Dalsen: closest NY bar admission year outside MA, and closest out-of-state office cities by how many NY-registered attorneys they list (~2,913 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2011)
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
William David Dalsen'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 William Dalsen licensed?
William Dalsen is licensed to practice law in New York.
When was William David Dalsen admitted to the bar?
William David Dalsen was admitted to the bar in 2011.
Where did William David Dalsen go to law school?
William David Dalsen attended University of Wisconsin Law School.
What company does William David Dalsen work for?
William David Dalsen is associated with Proskauer Rose LLP in Boston, MA.
Is William David Dalsen in good standing?
Yes, William David Dalsen 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.