New York attorney record · Judicial Dept 3
Jason A Mierzwa
Seton Hall University School Of Law alumna, admitted to the New York bar in 2017, registered office in Iselin, NJ. This record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2017
- Admitted
- 9
- Years in bar
- 5510409
- NY reg #
The record in one line
Admitted in 2017, Jason A Mierzwa has built 9 years of active New York practice - more tenure than 13% of the state's currently-active attorneys.
- 9 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- #145 of 166
- by tenure in Iselin office peers
- Law school
- Seton Hall University School Of Law
Data updated September 2026
What this profile tells you
Bar status & tenure
Bar number 5510409 on the New York register belongs to Jason A Mierzwa, currently in active 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 Helsinn Therapeutics (Us), Inc., located in Iselin, NJ, ZIP 08830. Educational background: Seton Hall University School of Law (6,483 registered alumni).
State context & due diligence
Jason A Mierzwa is currently part of the New York bar's active cohort, a group the breakdown below sizes against the full register.
Experience vs. the active New York bar
9 years into an active New York practice since a 2017 admission, Jason A Mierzwa sits here on the statewide experience curve - taller bars hold more attorneys at that experience level.
9 years on the New York bar
Years since admission, all currently-active NY attorneys
9 Top 87% higher than 13% 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 Iselin, NJ office peers
In Iselin, NJ's NY-registered cohort of 166, Jason A Mierzwa sits at local tenure rank #145 (87th percentile). See the Iselin attorney directory .
- Local rank
- #145
- City cohort
- 166
- Local percentile
- 87th
- Admitted
- 2017
Nearest tenure peers in Iselin
- John Patrick Burns admitted 2017 · 9 yr
- Conor John Hennessey admitted 2017 · 9 yr
- Djibril Anwar Carr admitted 2016 · 10 yr
- Frank Joseph Dyevoich Jr. admitted 2016 · 10 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 Jason compares to fellow Seton Hall University School Of Law alumni
Among the 4,775 Seton Hall University School Of Law graduates in the New York register, Jason A Mierzwa is longer-tenured than 11%.
9 years vs. Seton Hall University School Of Law alumni
Years since admission - 4,775 NY-registered alumni of this school
9 Top 89% higher than 11% of 4,775 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
Seton Hall University School Of Law's active-bar rate
Of Seton Hall University School Of Law's 6,483 alumni in the New York register, 70.8% currently hold "Currently registered" status, above the statewide average.
The 2017 admission class today
Of the 8,202 attorneys admitted to the New York bar in 2017, 93.5% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 5510409
- Year Admitted
- 2017 (9 yrs · mid-career)
- Judicial Department
- 3
- Next Registration
- Jun 2027
Location & Contact
- Company
- Helsinn Therapeutics (Us), Inc.
- City
- Iselin, NJ
- ZIP Code
- 08830
- Phone
- (908) 800-3485
Education
Status Distribution Across the New York Bar
Jason A Mierzwa'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 Seton Hall University School Of Law alumni
Fellow alumni on the NY register whose admission year is closest to 2017 (excluding same-firm colleagues above).
Same admission year (2017), other cities
NY-registered attorneys admitted in 2017 whose listed office city differs from Iselin, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Jason A Mierzwa: closest NY bar admission year outside NJ, and closest out-of-state office cities by how many NY-registered attorneys they list (~167 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~2017)
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 Iselin, NJ
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Compare Jason A Mierzwa with similar attorneys in Iselin.
Compare attorneys →Before you rely on this record
Jason A Mierzwa'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 Jason Mierzwa licensed?
Jason Mierzwa is licensed to practice law in New York.
When was Jason A Mierzwa admitted to the bar?
Jason A Mierzwa has been on the New York bar register since 2017.
Where did Jason A Mierzwa go to law school?
Jason A Mierzwa attended Seton Hall University School of Law.
What company does Jason A Mierzwa work for?
Jason A Mierzwa is associated with Helsinn Therapeutics (Us), Inc. in Iselin, NJ.
Is Jason A Mierzwa in good standing?
Yes, Jason A Mierzwa 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.