New York attorney record · Judicial Dept 1
William Henderson Guenther
Nyu alumna, admitted to the New York bar in 1976, registered office in Newport, RI. A half-lifetime's worth of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1976
- Admitted
- 50
- Years in bar
- 1128131
- NY reg #
The record in one line
William Henderson Guenther has spent 50 years on the register since admission in 1976, one of the longest-standing active practitioners the state bar carries at 96% tenure percentile.
- 50 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #2 of 32
- by tenure in Newport office peers
- Law school
- Nyu
Data updated September 2026
What this profile tells you
Bar status & tenure
William Henderson Guenther has carried New York bar registration 1128131 for the better part of a career, still active and in 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 Mass Insight Global Partnerships C/O William Guenther, located in Newport, RI, ZIP 02840. Educational background: NYU.
State context & due diligence
Across a career spanning 50 years, William Henderson Guenther 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
William Henderson Guenther's 50 years since a 1976 admission places this record near the far edge of the statewide tenure curve below.
50 years on the New York bar
Years since admission, all currently-active NY attorneys
50 Top 4% higher than 96% 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 Newport, RI office peers
Within Newport, RI's 32-attorney local set, William Henderson Guenther is #2 by tenure, a small-cohort read, not a statewide claim. See the Newport attorney directory .
- Local rank
- #2
- City cohort
- 32
- Local percentile
- 3rd
- Admitted
- 1976
Nearest tenure peers in Newport
- Walter Gurnee Reed admitted 1978 · 48 yr
- James William Ryan admitted 1973 · 53 yr
- Richard Peter Daddario admitted 1980 · 46 yr
- Gregory F. Fater admitted 1980 · 46 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 William compares to fellow Nyu alumni
Among the 970 Nyu graduates in the New York register, William Henderson Guenther is longer-tenured than 99%.
50 years vs. Nyu alumni
Years since admission - 970 NY-registered alumni of this school
50 Top 1% higher than 99% of 970 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 1976 admission class today
Of the 3,226 attorneys admitted to the New York bar in 1976, 50.2% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 1128131
- Year Admitted
- 1976 (50 yrs · veteran)
- Judicial Department
- 1
- Next Registration
- Mar 2028
Location & Contact
- Company
- Mass Insight Global Partnerships C/O William Guenther
- City
- Newport, RI
- ZIP Code
- 02840
- Phone
- (617) 512-6100
Education
NYU
Status Distribution Across the New York Bar
William Henderson Guenther'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 Nyu alumni
Fellow alumni on the NY register whose admission year is closest to 1976 (excluding same-firm colleagues above).
Same admission year (1976), other cities
NY-registered attorneys admitted in 1976 whose listed office city differs from Newport, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for William Henderson Guenther: closest NY bar admission year outside RI, and closest out-of-state office cities by how many NY-registered attorneys they list (~33 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~1976)
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 Henderson Guenther'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 Guenther licensed?
William Guenther is licensed to practice law in New York.
When was William Henderson Guenther admitted to the bar?
William Henderson Guenther's admission to the New York bar dates back to 1976.
Where did William Henderson Guenther go to law school?
William Henderson Guenther attended NYU.
What company does William Henderson Guenther work for?
William Henderson Guenther is associated with Mass Insight Global Partnerships C/O William Guenther in Newport, RI.
Is William Henderson Guenther in good standing?
Yes, William Henderson Guenther 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.