New York attorney record · Judicial Dept 1
Mariah Mumbi Kirubi
Strathmore University alumna, admitted to the New York bar in 2024. As a recent entrant to the registry, this record's status, address, and admission date come straight from the NY Office of Court Administration.
- 2024
- Admitted
- 2
- Years in bar
- 6133839
- NY reg #
The record in one line
Mariah Mumbi Kirubi is early in an active New York law career - admitted to the bar in 2024 and on active status for 2 years so far, already ahead of 0% of the state's active bar by tenure.
- 2 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- Top 100%
- by tenure among active NY attorneys
- Law school
- Strathmore University
Data updated September 2026
What this profile tells you
Bar status & tenure
Mariah Mumbi Kirubi holds bar number 6133839 with the New York bar authority, a recent active-status addition to the roll. 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 LLP, located in London. 5 other attorneys share this firm affiliation in the registry. Educational background: Strathmore University.
State context & due diligence
As a recent addition to the register, Mariah Mumbi Kirubi counts toward the New York bar's active cohort; the breakdown below shows how that group stacks up against the rest of the register.
Experience vs. the active New York bar
Mariah Mumbi Kirubi is a recent addition to the active New York bar, admitted in 2024. The histogram below shows where 2 years of tenure falls among every currently-active attorney in the state.
2 years on the New York bar
Years since admission, all currently-active NY attorneys
2 Top 100% higher than 0% 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
The 2024 admission class today
Of the 8,938 attorneys admitted to the New York bar in 2024, 78.3% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 6133839
- Year Admitted
- 2024 (2 yrs · early career)
- Judicial Department
- 1
- Next Registration
- Nov 2026
Location & Contact
- Company
- Simpson Thacher & Bartlett LLP
- City
- London
- Phone
- (749) 875-4446
Education
Strathmore University
Status Distribution Across the New York Bar
Mariah Mumbi Kirubi'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: Simpson Thacher & Bartlett LLP
Other NY-registered attorneys who share this firm name on the OCA register (not a geographic peer set).
Same admission year (2024), other cities
NY-registered attorneys admitted in 2024 whose listed office city differs from London, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Out-of-state NY bar peers for Mariah Mumbi Kirubi with the closest admission year to 2024. Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
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 SearchBefore you rely on this record
Mariah Mumbi Kirubi'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 Mariah Kirubi licensed?
Mariah Kirubi is licensed to practice law in New York.
When was Mariah Mumbi Kirubi admitted to the bar?
Mariah Mumbi Kirubi was admitted to the New York bar in 2024, 2 years ago.
Where did Mariah Mumbi Kirubi go to law school?
Mariah Mumbi Kirubi attended Strathmore University.
What company does Mariah Mumbi Kirubi work for?
Mariah Mumbi Kirubi is associated with Simpson Thacher & Bartlett LLP in London.
Is Mariah Mumbi Kirubi in good standing?
Yes, Mariah Mumbi Kirubi 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.