New Jersey Statutes Title 2A. Administration of Civil and Criminal Justice 2A § 44-42

Within 10 days after the filing of the notice of lien, the hospital, nursing home, physician or dentist shall send by registered mail or serve personally, a copy of such notice with a statement of the date of the filing thereof to or upon the injured person and the person alleged to be liable for damages sustained by such injured person, if such name and address can be ascertained by reasonable diligence. If the hospital, nursing home, physician or dentist shall neglect to give such notice where the name and address of the person injured or the person allegedly causing the injury are known or should be known, the lien shall be void.