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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman"><strong>UNITED
      STATES</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 14pt; FONT-FAMILY: Times New Roman"><strong>SECURITIES
      AND EXCHANGE COMMISSION</strong></font></div>
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      D.C. 20549</strong></font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 16pt; FONT-FAMILY: Times New Roman"><strong>FORM
      8-K</strong></font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong>CURRENT
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      THE SECURITIES EXCHANGE ACT OF 1934</strong></font></div>
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      29, 2006</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date
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      Act") or otherwise subject to the liabilities of that section, nor shall it
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            <td width="50%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
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            <td colspan="2"><strong><font size="2">NORTH AMERICAN SCIENTIFIC,
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            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">Date:
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            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">By:&#160;&#160;</font></td>
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              Michael Cutrer</font></td>
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</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">L.
              Michael Cutrer</font></td>
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                and Chief Executive Officer</font></div>
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UNITED
      STATES
SECURITIES
      AND EXCHANGE COMMISSION
Washington,
      D.C. 20549
FORM
      8-K
CURRENT
      REPORT PURSUANT TO SECTION 13 OR 15(d)
OF
      THE SECURITIES EXCHANGE ACT OF 1934
March
      29, 2006
Date
      of
      Report (Date of earliest event reported)
NORTH
      AMERICAN SCIENTIFIC, INC.
(Exact
      name of registrant as specified in its charter)
Delaware
0-26670
51-0366422
(State
                or other jurisdiction of
(Commission
(I.R.S.
                Employer
incorporation)
File
                Number )
Identification
                No.)
20200
      Sunburst Street, Chatsworth, California 91311
(Address
      of principal executive offices)
(Zip
      Code)
(818)
      734-8600
(Registrant's
      telephone number, including area code)
Not
      Applicable
(Former
      Name or Former Address, if Changed Since Last Report)
Check
      the
      appropriate box below if the Form 8-K filing is intended to simultaneously
      satisfy the filing obligation of the registrant under any of the following
      provisions:
o
Written
      communications pursuant to Rule 425 under the Securities Act (17 CFR
      230.425)
o
Soliciting
      material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)
o
Pre-commencement
      communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
      240.14d-2(b))
o
Pre-commencement
      communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
      240.13e-4(c))
Item
      7.01.
Regulation
      FD Disclosure.
North
      American Scientific, Inc. (the "Company") is meeting with certain investors over
      a several week period to provide an overview of the Company's new breast
      brachytherapy initiative, among other matters. A copy of the breast
      brachytherapy materials used at these meetings is available for viewing in
      the
      Investor Relations section of the Company's website (
www.nasmedical.com
)
      and
      will continue to be available on the Company's website for a reasonable period
      of time after the scheduled meetings.
The
      information in this Current Report on Form 8-K shall not be deemed "filed"
      for
      purposes of Section 18 of the Securities Exchange Act of 1934 (the "Exchange
      Act") or otherwise subject to the liabilities of that section, nor shall it
      be
      deemed incorporated by reference in any filing under the Securities Act of
      1933
      or the Exchange Act, regardless of any general incorporation language in such
      filing.
SIGNATURES
Pursuant
      to the requirements of the Securities Exchange Act of 1934, the Registrant
      has
      duly caused this report to be signed on its behalf by the undersigned hereunto
      duly authorized.
NORTH AMERICAN SCIENTIFIC,
              INC.
Date:
April
              6, 2006
By:
/s/L.
              Michael Cutrer
Name:
L.
              Michael Cutrer
Title:
President
                and Chief Executive Officer