New York attorney record · Judicial Dept 4
Frederick Joseph Petersen Iv
George Washington University Law School alumna, admitted to the New York bar in 2009, registered office in Buffalo, NY. This established record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2009
- Admitted
- 17
- Years in bar
- 4665303
- NY reg #
The record in one line
Frederick Joseph Petersen Iv has held an active New York bar license for 17 years - admitted in 2009, longer-tenured than 38% of the state's currently-active attorneys.
- 17 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #1927 of 3,464
- by tenure in Buffalo office peers
- Law school
- George Washington University Law School
Data updated September 2026
What this profile tells you
Bar status & tenure
Frederick Joseph Petersen Iv carries New York bar registration 4665303, 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 Frederick J. Petersen, Esq., Attorney At Law, located in Buffalo, NY (Erie County), ZIP 14203. Educational background: George Washington University Law School (6,568 registered alumni).
State context & due diligence
With an established practice on record, Frederick Joseph Petersen Iv 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
Frederick Joseph Petersen Iv was admitted in 2009, giving 17 years on the New York register.
17 years on the New York bar
Years since admission, all currently-active NY attorneys
17 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 · September 2026
Tenure among Buffalo, NY office peers
Frederick Joseph Petersen Iv's 17-year NY register tenure places mid-pack in Buffalo, NY: rank #1,927 of 3,464 office peers (56th percentile). See the Buffalo attorney directory .
- Local rank
- #1,927
- City cohort
- 3,464
- Local percentile
- 56th
- Admitted
- 2009
Nearest tenure peers in Buffalo
- S. Lee Anthis admitted 2009 · 17 yr
- David William Bentivegna admitted 2009 · 17 yr
- Lucy M. Berkman admitted 2009 · 17 yr
- Scott James Bogucki admitted 2009 · 17 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 Frederick compares to fellow George Washington University Law School alumni
Among the 4,597 George Washington University Law School graduates in the New York register, Frederick Joseph Petersen Iv is longer-tenured than 51%.
17 years vs. George Washington University Law School alumni
Years since admission - 4,597 NY-registered alumni of this school
17 Top 49% higher than 51% of 4,597 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
George Washington University Law School's active-bar rate
Of George Washington University Law School's 6,568 alumni in the New York register, 74.6% currently hold "Currently registered" status, above the statewide average.
The 2009 admission class today
Of the 10,203 attorneys admitted to the New York bar in 2009, 87.4% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 4665303
- Year Admitted
- 2009 (17 yrs · senior)
- Judicial Department
- 4
- Next Registration
- May 2027
Location & Contact
- Company
- Frederick J. Petersen, Esq., Attorney At Law
- City
- Buffalo, NY
- County
- Erie
- ZIP Code
- 14203
- Phone
- (716) 800-1029
Education
Status Distribution Across the New York Bar
Frederick Joseph Petersen Iv'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 George Washington University Law School alumni
Fellow alumni on the NY register whose admission year is closest to 2009 (excluding same-firm colleagues above).
Same admission year (2009), other cities
NY-registered attorneys admitted in 2009 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 Frederick Joseph Petersen Iv: 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 (~2009)
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
Frederick Joseph Petersen Iv'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 Frederick Petersen licensed?
Frederick Petersen is licensed to practice law in New York.
When was Frederick Joseph Petersen Iv admitted to the bar?
Frederick Joseph Petersen Iv was admitted to the bar in 2009.
Where did Frederick Joseph Petersen Iv go to law school?
Frederick Joseph Petersen Iv attended George Washington University Law School.
What company does Frederick Joseph Petersen Iv work for?
Frederick Joseph Petersen Iv is associated with Frederick J. Petersen, Esq., Attorney At Law in Buffalo, NY.
Is Frederick Joseph Petersen Iv in good standing?
Yes, Frederick Joseph Petersen Iv 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.