New York attorney record · Judicial Dept 4
Glenn David Mattison
Suny Buffalo alumna, admitted to the New York bar in 1990, registered office in Ontario, NY. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1990
- Admitted
- 36
- Years in bar
- 2298743
- NY reg #
The record in one line
With 36 years on the register since a 1990 admission, Glenn David Mattison ranks among the New York bar's most senior active practitioners, longer-tenured than 79% of the currently-active bar.
- 36 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #4 of 5
- by tenure in Ontario office peers
- Law school
- Suny Buffalo
Data updated August 2026
What this profile tells you
Bar status & tenure
Registration 2298743 with the New York bar authority has long belonged to Glenn David Mattison, a veteran practitioner still in active good standing. Registration is recorded within Judicial Department 4, the appellate division overseeing this attorney's home district.
Practice context & education
The attorney's registration lists a business address in Ontario, NY (Wayne County), ZIP 14519. Educational background: SUNY BUFFALO (941 registered alumni).
State context & due diligence
After 36 years on the register, Glenn David Mattison 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 Glenn David Mattison's 36 years since admission in 1990.
36 years on the New York bar
Years since admission, all currently-active NY attorneys
36 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 · August 2026
Tenure among Ontario, NY office peers
In the small Ontario, NY cohort (5 with admission years), Glenn David Mattison ranks #4 by tenure. See the Ontario attorney directory .
- Local rank
- #4
- City cohort
- 5
- Local percentile
- 60th
- Admitted
- 1990
Nearest tenure peers in Ontario
- Richard Allen Leszyk admitted 1989 · 37 yr
- Lauren Dru Frank admitted 1988 · 38 yr
- William Eugene Burkhart Jr admitted 1996 · 30 yr
- Subrata Paul admitted 1998 · 28 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 Glenn compares to fellow Suny Buffalo alumni
Among the 448 Suny Buffalo graduates in the New York register, Glenn David Mattison is longer-tenured than 85%.
36 years vs. Suny Buffalo alumni
Years since admission - 448 NY-registered alumni of this school
36 Top 15% higher than 85% of 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 · August 2026
Suny Buffalo's active-bar rate
Of Suny Buffalo's 941 alumni in the New York register, 64.9% currently hold "Currently registered" status, below the statewide average.
The 1990 admission class today
Of the 6,112 attorneys admitted to the New York bar in 1990, 56.3% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 2298743
- Year Admitted
- 1990 (36 yrs · veteran)
- Judicial Department
- 4
- Next Registration
- Jul 2028
Location & Contact
- City
- Ontario, NY
- County
- Wayne
- ZIP Code
- 14519
- Phone
- (585) 260-3849
Education
Status Distribution Across the New York Bar
Glenn David Mattison'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 Suny Buffalo alumni
Fellow alumni on the NY register whose admission year is closest to 1990 .
Same admission year (1990), other cities
NY-registered attorneys admitted in 1990 whose listed office city differs from Ontario, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Out-of-state NY bar peers for Glenn David Mattison with the closest admission year to 1990. Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
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 Ontario, NY
Compare credentials side-by-side
Compare Glenn David Mattison with similar attorneys in Ontario.
Compare attorneys →Before you rely on this record
Glenn David Mattison'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 Glenn Mattison licensed?
Glenn Mattison is licensed to practice law in New York.
When was Glenn David Mattison admitted to the bar?
Glenn David Mattison's admission to the New York bar dates back to 1990.
Where did Glenn David Mattison go to law school?
Glenn David Mattison attended SUNY BUFFALO.
Is Glenn David Mattison in good standing?
Yes, Glenn David Mattison 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.