New York attorney record · Judicial Dept 3
Mark Andrew Costello
Yale alumna, admitted to the New York bar in 1990, registered office in Milford, PA. Decades of status, address, and registration history on this record come straight from the NY Office of Court Administration.
- 1990
- Admitted
- 36
- Years in bar
- 2330819
- NY reg #
The record in one line
Mark Andrew Costello appears in the New York attorney register with a current status of "Due to reregister within 30 days of birthday", on record since 1990 - an administrative designation rather than discipline, but confirm current standing with the state bar.
- 36 yrs
- since first admission to the bar
- Pending-renewal
- current bar status: "Due to reregister within 30 days of birthday"
- #3 of 10
- by tenure in Milford office peers
- Law school
- Yale
Data updated August 2026
What this profile tells you
Bar status & tenure
Mark Andrew Costello is registered as bar number 2330819 with the New York bar authority, carrying a current status of "Due to reregister within 30 days of birthday", a routine periodic-renewal reminder, not discipline. Registration is recorded within Judicial Department 3, the appellate division overseeing this attorney's home district.
Practice context & education
The attorney's registration lists a business address in Milford, PA, ZIP 18337. Educational background: YALE (2,577 registered alumni).
State context & due diligence
A "Due to reregister within 30 days of birthday" status falls outside the New York bar's active cohort for now. The breakdown below shows what share of the register that represents.
Tenure among Milford, PA office peers
Within Milford, PA's 10-attorney local set, Mark Andrew Costello is #3 by tenure, a small-cohort read, not a statewide claim. See the Milford attorney directory .
- Local rank
- #3
- City cohort
- 10
- Local percentile
- 20th
- Admitted
- 1990
Nearest tenure peers in Milford
- Linda Margaret Coffey admitted 1991 · 35 yr
- Carol Anne Witschel admitted 1989 · 37 yr
- Charles Kannebecker admitted 1992 · 34 yr
- John Poka admitted 1996 · 30 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 August 2026. Derived local rank, not published upstream.
How Mark compares to fellow Yale alumni
Among the 1,092 Yale graduates in the New York register, Mark Andrew Costello is longer-tenured than 86%.
36 years vs. Yale alumni
Years since admission - 1,092 NY-registered alumni of this school
36 Top 14% higher than 86% of 1,092 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 · August 2026
Yale's active-bar rate
Of Yale's 2,577 alumni in the New York register, 48.6% currently hold "Currently registered" status, below the statewide average.
The 1990 admission class today
Of the 6,112 attorneys admitted to the New York bar in 1990, 56.3% are still "Currently registered" today, below the statewide average across all admission years.
Professional Details
- Status
- Due to reregister within 30 days of birthday
- Registration Number
- 2330819
- Year Admitted
- 1990 (36 yrs · veteran)
- Judicial Department
- 3
- Next Registration
- Jul 2026
Location & Contact
- City
- Milford, PA
- ZIP Code
- 18337
- Phone
- (646) 831-9069
Education
Status Distribution Across the New York Bar
Mark Andrew Costello's current status, "Due to reregister within 30 days of birthday", places this record outside 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 Yale alumni
Fellow alumni on the NY register whose admission year is closest to 1990 .
Same admission year (1990), other cities
NY-registered attorneys admitted in 1990 whose listed office city differs from Milford, a vintage cohort, not a neighborhood list.
Nationwide attorneys with similar admission year or city registry density
Two non-geo peer axes for Mark Andrew Costello: closest NY bar admission year outside PA, and closest out-of-state office cities by how many NY-registered attorneys they list (~11 here). Distinct from same-firm, fellow-alumni, and same-year other-city strips above.
Similar admission year (~1990)
Counts come from the NY State Office of Court Administration registration extract; peers are not a competence or practice-area ranking.
Verify This Attorney
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Compare attorneys →Before you rely on this record
Mark Andrew Costello is currently listed as "Due to reregister within 30 days of birthday", treat that as a registration fact to confirm, not a verdict on quality.
Frequently Asked Questions
Where is Mark Costello licensed?
Mark Costello is licensed to practice law in New York.
When was Mark Andrew Costello admitted to the bar?
Mark Andrew Costello's admission to the New York bar dates back to 1990.
Where did Mark Andrew Costello go to law school?
Mark Andrew Costello attended YALE.
Is Mark Andrew Costello in good standing?
Not currently, Mark Andrew Costello's listed status is "Due to reregister within 30 days of birthday", not active standing. Confirm current status with the state bar.
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.