New York attorney · Reg. #4329660

Mark Daniel Sullivan

Registration delinquent (registry: Delinquent)

Current employer

Mark D. Sullivan, Atty-At-Law · Longmeadow, MA · since at least September 2026

Admission

Admitted 2005, Third Department · Western New England University School of Law

Flags

• Registration delinquent

Employment history

• Mark D. Sullivan, Atty-At-Law · Longmeadow, MA · current

Compiled from NYS Office of Court Administration registration records, published NY Appellate Division decisions, and SEC orders against attorneys; current as of October 2026. Not an official record; verify with the NY Courts Attorney Search.