MH
Mark William Halderman
Mark William Halderman is a lawyer in New York, NY who works for Villegas & Cefo, LLP. Licensed in Texas since 2011. Graduated from Penn State Dickinson School of Law in 2009.
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Law school
Bar admission
Office
Disciplinary
MH
Mark William Halderman
Villegas & Cefo, LLPNew York, NY·15 years licensed
Claim profileContact attorney
Mark William Halderman is a lawyer in New York, NY who works for Villegas & Cefo, LLP. Licensed in Texas since 2011. Graduated from Penn State Dickinson School of Law in 2009.
Law school
Penn State Dickinson School of Law
Class of 2009
Bar admission
2011
State Bar of TX · No. 24077403
Office
1350 Avenue Of The Americas Fl 2
New York, NY 10019
Disciplinary
None on record
Clean since admission
Career history
2 observed firms
Based on State Bar of Texas snapshots — each row is a firm the attorney was registered with at one of our quarterly pulls.
- Armstrong Teasdale LLPAS OF MAY 2023Private Law Practice · Philadelphia, PA
- Villegas & Cefo, LLPAPR 2026 — PRESENTPrivate Law Practice · New York, NY
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Last refreshed Jun 2026