If the contract is with DHHS, they should immediately forward the claim to the PHS Claims Branch at the address indicated in § 900.201 and notify the contractor's tort claims liaison.
If the contract is with DOI, they should immediately notify the Assistant Solicitor, Procurement and Patents, Office of the Solicitor, Department of the Interior, Room 6511, 1849 C Street N.W., Washington, DC 20240.