New York attorney record · Judicial Dept 1
Johanna K Mayer
Columbia Law School alumna, admitted to the New York bar in 2015, registered office in New York, NY. This record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2015
- Admitted
- 11
- Years in bar
- 5311733
- NY reg #
The record in one line
Admitted in 2015, Johanna K Mayer has built 11 years of active New York practice - more tenure than 24% of the state's currently-active attorneys.
- 11 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- Top 76%
- by tenure among active NY attorneys
- Law school
- Columbia Law School
Data updated May 2026
What this profile tells you
Bar status & tenure
Bar number 5311733 on the New York register belongs to Johanna K Mayer, currently in active standing. Registration is recorded within Judicial Department 1, the appellate division overseeing this attorney's home district.
Practice context & education
Practice address is listed under Simpson Thacher & Bartlett, located in New York, NY (New York County), ZIP 10017. 5 other attorneys share this firm affiliation in the registry. Educational background: Columbia Law School (21,447 registered alumni).
State context & due diligence
Johanna K Mayer 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
11 years into an active New York practice since a 2015 admission, Johanna K Mayer sits here on the statewide experience curve - taller bars hold more attorneys at that experience level.
11 years on the New York bar
Years since admission, all currently-active NY attorneys
11 Top 76% higher than 24% of 284,296 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 · May 2026
How Johanna compares to fellow Columbia Law School alumni
Among the 11,886 Columbia Law School graduates in the New York register, Johanna K Mayer is longer-tenured than 37% - a school-cohort view of experience, alongside the statewide one above.
11 years vs. Columbia Law School alumni
Years since admission - 11,886 NY-registered alumni of this school
11 Top 63% higher than 37% of 11,886 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 · May 2026
Columbia Law School's active-bar rate
Of Columbia Law School's 21,447 alumni in the New York register, 77.3% currently hold "Currently registered" status, above the statewide average.
Columbia Law School alumni, active-bar rate
The 2015 admission class today
Of the 8,867 attorneys admitted to the New York bar in 2015, 90.7% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 5311733
- Year Admitted
- 2015 (11 yrs · mid-career)
- Judicial Department
- 1
- Next Registration
- May 2027
Location & Contact
- Company
- Simpson Thacher & Bartlett
- City
- New York, NY
- County
- New York
- ZIP Code
- 10017
- Phone
- (917) 670-7607
Education
Status Distribution Across the New York Bar
Johanna K Mayer's current status, "Currently registered", places this attorney in the 66.2% of the 429,620-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.
Other Attorneys at Simpson Thacher & Bartlett
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Compare attorneys →Before you rely on this record
Johanna K Mayer'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 Johanna Mayer licensed?
Johanna Mayer is licensed to practice law in New York.
When was Johanna K Mayer admitted to the bar?
Johanna K Mayer has been on the New York bar register since 2015.
Where did Johanna K Mayer go to law school?
Johanna K Mayer attended Columbia Law School.
What company does Johanna K Mayer work for?
Johanna K Mayer is associated with Simpson Thacher & Bartlett in New York, NY.
Is Johanna K Mayer in good standing?
Yes, Johanna K Mayer holds active bar status ("Currently registered").
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.