CHATSWORTH, Calif.--(BUSINESS WIRE)--March 17, 2006--North American Scientific, Inc. (Nasdaq:NASI) today announced that it received a notice from The Nasdaq Stock Market (“Nasdaq”) dated March 14, 2006 indicating that the Company does not comply with the minimum $10 million stockholders’ equity requirement under Maintenance Standard 1 for continued listing on The Nasdaq National Market set forth in Marketplace Rule 4450(a)(3). In addition, the Company does not comply with the minimum $50 million market value of listed securities requirement under Maintenance Standard 2 for continued listing.