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

                Date of report (Date of earliest event reported):
                                  JUNE 27, 2006


                         MAGELLAN HEALTH SERVICES, INC.
             (Exact Name of Registrant as Specified in its Charter)


          DELAWARE                       1-6639                  58-1076937
(State or Other Jurisdiction        (Commission File           (IRS Employer
      of Incorporation)                  Number)             Identification No.)


              55 NOD ROAD
           AVON, CONNECTICUT                                      06001
(Address of Principal Executive Offices)                        (Zip Code)


       Registrant's telephone number, including area code: (860) 507-1900


                                       N/A
          (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 (see General Instruction A.2. below):

     |_| 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

            Magellan Health Services, Inc., a Delaware corporation ("Magellan"),
Green Spring Health Services Inc., a Delaware corporation and wholly-owned
subsidiary of Magellan ("Green Spring"), Magellan Sub Co. II, Inc., a Delaware
corporation and wholly-owned subsidiary of Green Spring ("Merger Sub"), ICORE
Healthcare, LLC, a Delaware limited liability company ("ICORE"), and Raju
Mantena, as representative of the unitholders of ICORE entered into an Agreement
and Plan of Merger dated as of June 27, 2006 (the "Merger Agreement"), pursuant
to which Magellan will acquire all of the outstanding units of ICORE.
Specifically, on the terms and subject to satisfaction of the conditions
provided by the Merger Agreement, Merger Sub will be merged with and into ICORE,
and ICORE will continue as the surviving company of the merger as a wholly-owned
subsidiary of Green Spring (the "Merger").

            As consideration for the Merger, Magellan will pay a base price of
$210 million and a potential earn-out of $75 million for the benefit of ICORE's
unitholders, all of whom are members of ICORE's management team. Magellan may
also be required to make a working capital adjustment payment for the benefit of
ICORE's unitholders as provided in the Merger Agreement. The base price is
payable in cash of $186 million and through a reinvestment in restricted stock
of Magellan valued at $24 million, which stock will vest over three years,
provided that the unitholders do not terminate their employment with Magellan or
any subsidiary of Magellan. The earn-out has two parts: (i) up to $25 million
based on earnings for the 18 month period ending December 31, 2007 and (ii) up
to $50 million based on earnings in 2008. The earn-out, if earned, is payable 33
percent in cash and 67 percent in restricted stock of Magellan that vests over
two years after issuance. Of the total amount of the base price, $25 million
plus accrued interest will be deferred (the "Deferred Payment") until the third
anniversary of the closing date of the Merger. Under certain circumstances
relating to Magellan's financial condition, such as its credit rating falling
below a B or B2, Magellan will be required to deposit an amount equal to the
Deferred Payment into an escrow account.

            In the Merger Agreement, ICORE has made representations and
warranties concerning its business and affairs and agreed to covenants
concerning the conduct of its business between the signing of the Merger
Agreement and the closing of the Merger customary in transactions of a like
nature, including, subject to certain exceptions, agreeing (i) to conduct its
business in the ordinary course consistent with past practice, (ii) not to
engage in certain kinds of transactions significant to its business without
Magellan's consent, (iii) not to solicit proposals relating to an alternative
business combination and (iv) not to enter into discussions concerning or
provide information in connection with an alternative business combination.
Claims of indemnity which Magellan may have against ICORE arising out of the
transaction (such as those relating to a breach of representations and
warranties) will be paid first from a portion of the Deferred Payment (or from
the escrow account, if established), subject to certain limitations. In the
Merger Agreement, Magellan has also made representations and warranties
concerning its affairs customary in transactions of a like nature. Certain


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members of ICORE's management have entered into employment agreements with
Magellan that will become effective upon the closing of the Merger.

            Consummation of the Merger is subject to customary conditions,
including (i) expiration or termination of the applicable waiting period under
the Hart-Scott-Rodino Antitrust Improvements Act of 1976, as amended, and
receipt of other required regulatory approvals and (ii) the absence of any law
or order prohibiting the closing of the Merger. Magellan's obligation to close
the Merger is subject to additional conditions, including (i) the absence of any
events having a material adverse effect with respect to ICORE's business, (ii)
the absence of any litigation with a reasonable likelihood of preventing the
closing of the Merger or imposing certain limitations on ICORE or Magellan after
the Merger, (iii) the attainment by ICORE of certain material third party
consents, waivers and approvals and (iv) the approval of Magellan's lenders
under its credit agreement. Magellan may waive any of such conditions. ICORE has
represented that the Merger has received the necessary approval of its
unitholders and, accordingly, such approval is not a condition of the Merger.
Magellan currently expects the Merger to close by the end of September 2006 if
not earlier.

            The Merger Agreement contains certain termination rights for both
Magellan and ICORE customary in transactions of a like nature; ICORE is not
entitled to terminate the agreement in favor of pursuing an alternative business
combination.

ITEM 8.01.  OTHER EVENTS.

            On June 28, 2006, Magellan issued a press release announcing the
execution of the Merger Agreement and providing guidance with respect to the
ICORE business and the impact of the Merger. A copy of the press release is
attached hereto as Exhibit 99.1 and is incorporated herein by reference.

ITEM 9.01.  FINANCIAL STATEMENTS AND EXHIBITS

(C) EXHIBITS


EXHIBIT NO.         DESCRIPTION
----------          -----------

   99.1             Press Release, dated June 28, 2006






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                                   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.


                                            MAGELLAN HEALTH SERVICES, INC.

                                            By: /s/ Mark S. Demilio
                                                -------------------------------
                                            Name: Mark S. Demilio
                                            Title: Executive Vice President and
                                                   Chief Financial Officer

Dated:  June 29, 2006



















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                                  EXHIBIT INDEX


EXHIBIT NO.         DESCRIPTION
----------          -----------

   99.1             Press Release, dated June 28, 2006.
































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