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      D.C. 20549</strong></font></div>
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    <div>&#160;</div>
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      8-K</strong></font></div>
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      REPORT PURSUANT TO SECTION 13 OR 15(d)</strong></font></div>
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      THE SECURITIES EXCHANGE ACT OF 1934</strong></font></div>
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      <div>&#160;</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: 14pt; FONT-FAMILY: Times New Roman"><strong>NORTH
      AMERICAN SCIENTIFIC, INC.</strong></font></div>
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</font><font style="DISPLAY: inline; FONT-SIZE: 8pt; FONT-FAMILY: Times New Roman">File
                Number )</font></div>
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              <div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><strong><font size="2">20200
                Sunburst Street, Chatsworth,
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                of principal executive offices)<font id="TAB2" style="LETTER-SPACING: 9pt">&#160;&#160;&#160;</font>&#160;(Zip
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            <td width="40%">&#160;</td>
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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>(818)
      734-8600</strong></font></div>
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      satisfy the filing obligation of the registrant under any of the following
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      </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Soliciting
      material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
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      </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Pre-commencement
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong><em>Approval
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      North American Scientific, Inc. (the &#8220;Company&#8221;) approved the North American
      Scientific, Inc. 2006 Stock Plan (the &#8220;2006 Plan&#8221;). The 2006 Plan will replace
      the North American Scientific, Inc. Amended and Restated 1996 Stock Option
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      made after March 31, 2006. The 2006 Plan was adopted by the Board of Directors
      (the &#8220;Board&#8221;) of the Company on February 8, 2006, subject to stockholder
      approval, and became effective on February 8, 2006.</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
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      stock appreciation rights (SARs), restricted stock, restricted stock units
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      equity-based awards with performance-based conditions to vesting or
      exercisability to employees (including officers), directors and consultants
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      the Company and its subsidiaries. The total number of shares authorized and
      available for issuance under the 2006 Plan is 1,700,000, plus any shares from
      the 1996 Plan that are subsequently terminated, expire unexercised, or
      forfeited. The maximum number of shares under the 2006 Plan that may be granted
      in any one fiscal year to an individual participant may not exceed 300,000
      shares.</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 36pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Awards
      under the 2006 Plan are intended to qualify as performance-based compensation
      under Section 162(m) of the Internal Revenue Code, provided that such grants
      are
      made in the form of option grants, grants of SARs, or are based on one or more
      of the performance measures specified in the 2006 Plan. Shares subject to an
      award under the 2006 Plan or under the 1996 Plan that are terminated, expire
      unexercised, or forfeited, repurchased by the Company at their original purchase
      price, or settled in cash in lieu of shares, shall be available for subsequent
      awards under the 2006 Plan. Any shares that again become available for issuance
      under the 2006 Plan will be added back as one share for shares subject to
      options or SARs or 1.3 shares for awards other than options or SARs. Awards
      granted in assumption of, or in substitution for, awards previously granted
      by a
      company acquired by, or merged into, the Company or a subsidiary will not reduce
      the shares authorized for issuance under the 2006 Plan or authorized for grant
      to a participant in any calendar year.</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">The
      foregoing description of the 2006 Plan is not complete and is qualified in
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      entirety by reference to the full text of the 2006 Plan, which was filed as
      Appendix A to the Company&#8217;s Definitive Proxy Statement for its 2006 Annual
      Meeting of Stockholders, as filed with the Securities and Exchange Commission
      on
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    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman"><strong><em>Compensation
      of the Chairman of the Board of Directors</em></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="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On
      May 3,
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      modified its compensation arrangements applicable to the Chairman of the Board
      of the Company. Effective May 3, 2006, the Chairman will receive:</font></div>
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            <td style="width: 36pt;"><font size="2">&#8226;</font></td>
            <td align="left"><font size="2">a cash retainer of $40,000 per year
              in lieu of
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            <td style="width: 36pt;">&#160;</td>
            <td>&#160;</td>
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            <td style="width: 36pt;">
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                non-statutory stock option to purchase 25,000 shares of common stock
                of
                the Company per year in lieu of a non-statutory stock option to purchase
                15,000 shares.</font></div>
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      <div>&#160;</div>
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      Chairman of the Board will continue to receive additional fees for each
      committee meeting attended (whether in person or by telephone) if the Chairman
      is a member of that committee.</font></div>
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    <div style="DISPLAY: block; MARGIN-LEFT: 72pt; TEXT-INDENT: -72pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB2" style="COLOR: black; LETTER-SPACING: 27pt"></font>&#160;</div>
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            <td width="85%">&#160;</td>
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            <td width="10%">&#160;</td>
            <td width="5%">&#160;</td>
            <td width="85%">&#160;</td>
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            <td width="10%"><strong><font size="2"><u>Exhibit No.</u><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">&#160;</font></font></strong></td>
            <td width="5%">&#160;</td>
            <td width="85%"><strong><u><font size="2">Description</font></u></strong></td>
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                American Scientific, Inc. 2006 Stock Plan (incorporated </font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font size="2"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">by
                reference to Appendix A to the Company's Definitive Proxy
                </font></font></div>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font size="2"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Statement
                filed on April 5, 2006).</font></font></div>
            </td>
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        <div style="WIDTH: 100%; TEXT-ALIGN: center">
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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>SIGNATURES</strong></font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="center"><br></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font id="TAB1" style="MARGIN-LEFT: 36pt"></font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">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.</font></div>
    <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left">&#160;</div>
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      <table align="center" bgcolor="#ffffff" border="0" cellpadding="0" cellspacing="0" width="100%">

          <tr valign="top" bgcolor="#ffffff">
            <td width="50%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td width="1%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td width="49%"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
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            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
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                AMERICAN SCIENTIFIC, INC.</strong></font></div>
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          </tr>
          <tr valign="top" bgcolor="#ffffff">
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;<br>&#160;</font></td>
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            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">Date:&#160;May
              8,
              2006</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">By:&#160;&#160;</font></td>
            <td><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">/s/
              L.
              Michael Cutrer</font></td>
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            <td align="left">
              <hr style="COLOR: black" align="left" noshade size="2" width="80%"><font size="2">Name:
</font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">L.
              Michael Cutrer</font></td>
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            <td colspan="2"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: ">&#160;</font></td>
            <td>
              <div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; LINE-HEIGHT: 1.25; MARGIN-RIGHT: 0pt" align="left"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Title:
                </font><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">President
                and Chief Executive Officer</font></div>
            </td>
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{"company-data": {"conformed-name": "NORTH AMERICAN SCIENTIFIC INC", "cik": "0000949876", "assigned-sic": "3845", "irs-number": "510366422", "fiscal-year-end": "1031"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-26670", "film-number": "06821436"}, "business-address": {"street1": "20200 SUNBURST ST", "city": "CHATSWORTH", "state": "CA", "zip": "91311", "phone": "8187348600"}, "mail-address": {"street1": "20200 SUNBURST ST", "city": "CHATSWORTH", "state": "CA", "zip": "91311"}}
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
May
      3, 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
incorporation)
(Commission
File
                Number )
(I.R.S.
                Employer 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:
□
Written
      communications pursuant to Rule 425 under the Securities Act (17 CFR
      230.425)
□
Soliciting
      material pursuant to Rule 14a-12 under the Exchange Act (17 CFR
      240.14a-12)
□
Pre-commencement
      communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR
      240.14d-2(b))
□
Pre-commencement
      communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR
      240.13e-4(c))
Item
      1.01
Entry into a Material
      Definitive Agreement.
Approval
      of the North American Scientific, Inc. 2006 Stock
      Plan
At
      the
      2006 Annual Meeting of Stockholders held on May 3, 2006, the stockholders of
      North American Scientific, Inc. (the "Company") approved the North American
      Scientific, Inc. 2006 Stock Plan (the "2006 Plan"). The 2006 Plan will replace
      the North American Scientific, Inc. Amended and Restated 1996 Stock Option
      Plan
      (the "1996 Plan"), under which by its terms no further grants of awards could be
      made after March 31, 2006. The 2006 Plan was adopted by the Board of Directors
      (the "Board") of the Company on February 8, 2006, subject to stockholder
      approval, and became effective on February 8, 2006.
The
      2006
      Plan authorizes awards of incentive stock options, nonstatutory stock options,
      stock appreciation rights (SARs), restricted stock, restricted stock units
      and
      equity-based awards with performance-based conditions to vesting or
      exercisability to employees (including officers), directors and consultants
      of
      the Company and its subsidiaries. The total number of shares authorized and
      available for issuance under the 2006 Plan is 1,700,000, plus any shares from
      the 1996 Plan that are subsequently terminated, expire unexercised, or
      forfeited. The maximum number of shares under the 2006 Plan that may be granted
      in any one fiscal year to an individual participant may not exceed 300,000
      shares.
Awards
      under the 2006 Plan are intended to qualify as performance-based compensation
      under Section 162(m) of the Internal Revenue Code, provided that such grants
      are
      made in the form of option grants, grants of SARs, or are based on one or more
      of the performance measures specified in the 2006 Plan. Shares subject to an
      award under the 2006 Plan or under the 1996 Plan that are terminated, expire
      unexercised, or forfeited, repurchased by the Company at their original purchase
      price, or settled in cash in lieu of shares, shall be available for subsequent
      awards under the 2006 Plan. Any shares that again become available for issuance
      under the 2006 Plan will be added back as one share for shares subject to
      options or SARs or 1.3 shares for awards other than options or SARs. Awards
      granted in assumption of, or in substitution for, awards previously granted
      by a
      company acquired by, or merged into, the Company or a subsidiary will not reduce
      the shares authorized for issuance under the 2006 Plan or authorized for grant
      to a participant in any calendar year.
The
      foregoing description of the 2006 Plan is not complete and is qualified in
      its
      entirety by reference to the full text of the 2006 Plan, which was filed as
      Appendix A to the Company's Definitive Proxy Statement for its 2006 Annual
      Meeting of Stockholders, as filed with the Securities and Exchange Commission
      on
      April 5, 2006, and is incorporated herein by reference.
Compensation
      of the Chairman of the Board of Directors
On
      May 3,
      2006, the Board, pursuant to the recommendation of its Compensation Committee,
      modified its compensation arrangements applicable to the Chairman of the Board
      of the Company. Effective May 3, 2006, the Chairman will receive:
•
a cash retainer of $40,000 per year
              in lieu of
              a $5,000 quarterly payment; and
•
a
                non-statutory stock option to purchase 25,000 shares of common stock
                of
                the Company per year in lieu of a non-statutory stock option to purchase
                15,000 shares.
The
      Chairman of the Board will continue to receive additional fees for each
      committee meeting attended (whether in person or by telephone) if the Chairman
      is a member of that committee.
Item
      9.01 Financial Statements and Exhibits.
(c)
Exhibits
Exhibit No.
Description
10.1
North
                American Scientific, Inc. 2006 Stock Plan (incorporated
by
                reference to Appendix A to the Company's Definitive Proxy
Statement
                filed on April 5, 2006).
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: May
              8,
              2006
By:
/s/
              L.
              Michael Cutrer
Name:
L.
              Michael Cutrer
Title:
President
                and Chief Executive Officer