New York attorney record · Judicial Dept 3
John Joseph Dieffenbach
Cornell Law School alumna, admitted to the New York bar in 1993, registered office in Hoboken, NJ. Status, address, and registration history come straight from the NY Office of Court Administration registry.
- 1993
- Admitted
- 33
- Years in bar
- 2520401
- NY reg #
New York has 429,620 registered attorneys, of which 284,296 are currently active.
What this profile tells you
Bar status & tenure
John Joseph Dieffenbach is registered as bar number 2520401 with the New York bar authority, carrying a current status of "Currently registered", which indicates the attorney is currently authorized to practice law and is in good standing for registration purposes. The attorney was admitted to the bar in 1993, representing roughly 33 years since admission — a useful signal when weighing depth of practical experience against fee expectations. Registration is recorded within Judicial Department 3, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under ERNST & YOUNG, located in Hoboken, NJ, ZIP 07030. Public records list 5 other attorneys with the same firm affiliation in this registry — firm size and colleague credentials are relevant when judging the scope and specialty mix of a practice. Educational background: Cornell Law School — which has 4,728 registered alumni in this dataset, one of the admissions credentials used by the bar to verify qualification for licensure.
State context & due diligence
For benchmarking context, New York has 429,620 registered attorneys statewide, of which 284,296 (66.2%) are actively registered — this attorney's "Currently registered" status places them within the active cohort. Bar registration status alone does not confirm competence, specialty, or fit for a specific legal matter — it confirms only that the attorney has met the bar's registration requirements as of the last reporting cycle. Before engaging any attorney, verify their current standing directly with the state bar, review any discipline history through official channels, confirm fee structure in writing, and ask about specific experience handling matters similar to yours. Public profiles like this one are a starting point for due diligence, not a substitute for it.
Professional Details
- Status
- Currently registered
- Registration Number
- 2520401
- Year Admitted
- 1993 (33 yrs · veteran)
- Judicial Department
- 3
- Next Registration
- Aug 2027
Location & Contact
- Company
- ERNST & YOUNG
- City
- Hoboken, NJ
- ZIP Code
- 07030
- Phone
- (914) 610-1193
Education
Status Distribution Across the New York Bar
Bar status reference for the 429,620 attorneys registered in this jurisdiction. John Joseph Dieffenbach's current status is "Currently registered".
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.
Other Attorneys at ERNST & YOUNG
Verify This Attorney
Always verify attorney credentials through official state bar records before making legal decisions.
Verify on NY Courts Attorney SearchSource: New York State Unified Court System — Attorney Registration Search
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Compare attorneys →Frequently Asked Questions
Where is John Dieffenbach licensed?
John Dieffenbach is licensed in New York. Their current bar status is "Currently registered".
When was John Joseph Dieffenbach admitted to the bar?
John Joseph Dieffenbach was admitted to the bar in 1993.
Where did John Joseph Dieffenbach go to law school?
John Joseph Dieffenbach attended Cornell Law School.
What company does John Joseph Dieffenbach work for?
John Joseph Dieffenbach is associated with ERNST & YOUNG in Hoboken, NJ.
Is John Joseph Dieffenbach in good standing?
Yes, John Joseph Dieffenbach has a current registration status of "Currently registered", indicating active standing with the bar.
Disclaimer: This information is sourced from public state bar records provided by the New York Office of Court Administration. PlainAttorney does not provide legal advice, referrals, or endorsements. Use this data for informational purposes only. Always verify attorney credentials directly with the NY Courts Attorney Search before making legal decisions.
Read our methodology — how this data is sourced, computed, and verified.