New York attorney record · Judicial Dept 1
Mark D. Nielsen
Harvard alumna, admitted to the New York bar in 2019, registered office in Norwalk, CT. This record's status, address, and registration history come straight from the NY Office of Court Administration.
- 2019
- Admitted
- 7
- Years in bar
- 5647615
- NY reg #
The record in one line
Admitted in 2019, Mark D. Nielsen has built 7 years of active New York practice - more tenure than 12% of the state's currently-active attorneys.
- 7 yrs
- in active practice since admission
- Active
- current bar status: "Currently registered"
- Top 88%
- by tenure among active NY attorneys
- Law school
- Harvard
Data updated May 2026
What this profile tells you
Bar status & tenure
Bar number 5647615 on the New York register belongs to Mark D. Nielsen, 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 Frontier Communications, located in Norwalk, CT, ZIP 06854. 1 other attorney shares this firm affiliation in the registry. Educational background: HARVARD.
State context & due diligence
Mark D. Nielsen 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
7 years into an active New York practice since a 2019 admission, Mark D. Nielsen sits here on the statewide experience curve - taller bars hold more attorneys at that experience level.
7 years on the New York bar
Years since admission, all currently-active NY attorneys
7 Top 88% higher than 12% 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 Mark compares to fellow Harvard alumni
Among the 3,070 Harvard graduates in the New York register, Mark D. Nielsen is longer-tenured than 0% - a school-cohort view of experience, alongside the statewide one above.
7 years vs. Harvard alumni
Years since admission - 3,070 NY-registered alumni of this school
7 Top 100% higher than 0% of 3,070 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
The 2019 admission class today
Of the 8,536 attorneys admitted to the New York bar in 2019, 92.5% are still "Currently registered" today, above the statewide average across all admission years.
Professional Details
- Status
- Currently registered
- Registration Number
- 5647615
- Year Admitted
- 2019 (7 yrs · mid-career)
- Judicial Department
- 1
- Next Registration
- Aug 2027
Location & Contact
- Company
- Frontier Communications
- City
- Norwalk, CT
- ZIP Code
- 06854
- Phone
- (203) 614-5050
Education
HARVARD
Status Distribution Across the New York Bar
Mark D. Nielsen'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 Frontier Communications
View all attorneys at this firm →Verify This Attorney
Verify on NY Courts Attorney SearchNearby Attorneys in Norwalk, CT
Compare credentials side-by-side
Compare Mark D. Nielsen with similar attorneys in Norwalk.
Compare attorneys →Before you rely on this record
Mark D. Nielsen'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 Mark Nielsen licensed?
Mark Nielsen is licensed to practice law in New York.
When was Mark D. Nielsen admitted to the bar?
Mark D. Nielsen has been on the New York bar register since 2019.
Where did Mark D. Nielsen go to law school?
Mark D. Nielsen attended HARVARD.
What company does Mark D. Nielsen work for?
Mark D. Nielsen is associated with Frontier Communications in Norwalk, CT.
Is Mark D. Nielsen in good standing?
Yes, Mark D. Nielsen 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.