New York attorney · Reg. #4003851

Daniel Joseph Costello

Registered (registry: Currently registered)

Current employer

Washington Gas & Light Company · Springfield, VA · since at least September 2026

Admission

Admitted 2002, Second Department · St. Johns University School of Law

Employment history

• Washington Gas & Light Company · Springfield, VA · current

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