N.H. Rev. Stat. § 448-A:3
Any person or persons, firm or firms, corporation or corporations, including an insurance carrier, making any payment to such patient or to his attorneys or heirs or legal representatives, or to any other person as compensation for the injury sustained, after the filing and receipt of such notice, without paying to such hospital or home health care provider the amount of its lien or so much thereof as can be satisfied out of the moneys due under any final judgment or compromise or settlement agreement after paying the amount of any prior liens, shall for a period of one year from the date of payment to such patient or his heirs, attorneys or legal representatives, or other person, as aforesaid, be and remain liable to such hospital or home health care provider for the amount which the hospital or home health care provider was entitled to receive; and any association, corporation or other institution maintaining such hospital or home health care provider may, within such period, enforce its lien by a suit at law against the person or persons, firm or firms, corporation or corporations making any such payment.
RSA 448-A:3
1955, 276:3. RSA 448-A:3. 1987, 123:4, eff. July 6, 1987.