New York attorney · Reg. #4520573

John Daniel Castiglione

Registered (registry: Currently registered)

Current employer

Massachusetts Mutual Life Insurance Company · New York, NY · since at least September 2026

Admission

Admitted 2007, First Department · George Washington University Law School

Employment history

• Massachusetts Mutual Life Insurance Company · New York, NY · 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.