New York attorney record · Judicial Dept 4
Colleen Katherine Mattrey
Suny At Buffalo alumna, admitted to the New York bar in 2005, registered office in Buffalo, NY. This established record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2005
- Admitted
- 21
- Years in bar
- 4301636
- NY reg #
The record in one line
Colleen Katherine Mattrey has held an active New York bar license for 21 years - admitted in 2005, longer-tenured than 51% of the state's currently-active attorneys.
- 21 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #1635 of 3,464
- by tenure in Buffalo office peers
- Law school
- Suny At Buffalo
Data updated August 2026
What this profile tells you
Bar status & tenure
Colleen Katherine Mattrey carries New York bar registration 4301636, an established, active practitioner in good standing. Registration is recorded within Judicial Department 4, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Ricotta Mattrey Callocchia Markel & Cassert, located in Buffalo, NY (Erie County), ZIP 14202. 4 other attorneys share this firm affiliation in the registry. Educational background: SUNY AT BUFFALO (2,896 registered alumni).
State context & due diligence
With an established practice on record, Colleen Katherine Mattrey 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
Colleen Katherine Mattrey was admitted in 2005, giving 21 years on the New York register.
21 years on the New York bar
Years since admission, all currently-active NY attorneys
21 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 · August 2026
Tenure among Buffalo, NY office peers
Colleen Katherine Mattrey's 21-year NY register tenure places mid-pack in Buffalo, NY: rank #1,635 of 3,464 office peers (47th percentile). See the Buffalo attorney directory .
- Local rank
- #1,635
- City cohort
- 3,464
- Local percentile
- 47th
- Admitted
- 2005
Nearest tenure peers in Buffalo
- Divitta Maria Alexander admitted 2005 · 21 yr
- Michael Lawrence Amodeo admitted 2005 · 21 yr
- Seth Jeremy Andrews admitted 2005 · 21 yr
- Timothy Alfred Ball 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 August 2026. Derived local rank, not published upstream.
How Colleen compares to fellow Suny At Buffalo alumni
Among the 1,234 Suny At Buffalo graduates in the New York register, Colleen Katherine Mattrey is longer-tenured than 4%.
21 years vs. Suny At Buffalo alumni
Years since admission - 1,234 NY-registered alumni of this school
21 Top 96% higher than 4% of 1,234 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 At Buffalo's active-bar rate
Of Suny At Buffalo's 2,896 alumni in the New York register, 60.5% currently hold "Currently registered" status, below the statewide average.
The 2005 admission class today
Of the 8,525 attorneys admitted to the New York bar in 2005, 85.6% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 4301636
- Year Admitted
- 2005 (21 yrs · senior)
- Judicial Department
- 4
- Next Registration
- Mar 2027
Location & Contact
- Company
- Ricotta Mattrey Callocchia Markel & Cassert
- City
- Buffalo, NY
- County
- Erie
- ZIP Code
- 14202
- Phone
- (716) 854-6424
Education
Status Distribution Across the New York Bar
Colleen Katherine Mattrey'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: Ricotta Mattrey Callocchia Markel & Cassert
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Near-tenure Suny At Buffalo alumni
Fellow alumni on the NY register whose admission year is closest to 2005 (excluding same-firm colleagues above).
Same admission year (2005), other cities
NY-registered attorneys admitted in 2005 whose listed office city differs from Buffalo, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Colleen Katherine Mattrey: closest NY bar admission year outside NY, and closest out-of-state office cities by how many NY-registered attorneys they list (~3,465 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2005)
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
Colleen Katherine Mattrey'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 Colleen Mattrey licensed?
Colleen Mattrey is licensed to practice law in New York.
When was Colleen Katherine Mattrey admitted to the bar?
Colleen Katherine Mattrey was admitted to the bar in 2005.
Where did Colleen Katherine Mattrey go to law school?
Colleen Katherine Mattrey attended SUNY AT BUFFALO.
What company does Colleen Katherine Mattrey work for?
Colleen Katherine Mattrey is associated with Ricotta Mattrey Callocchia Markel & Cassert in Buffalo, NY.
Is Colleen Katherine Mattrey in good standing?
Yes, Colleen Katherine Mattrey 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.