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):
                                November 7, 2005
                                                                    
                         MAGELLAN HEALTH SERVICES, INC.
               (Exact Name of Registrant as Specified in 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 8.01 - OTHER EVENTS

           The State of Tennessee Bureau of Tenncare announced yesterday that it
had issued a Request for Information ("RFI") with regard to a possible model for
the management of the integrated delivery of behavioral and physical medical
care to Tenncare enrollees in the Middle Region of Tennessee by managed care
organizations. The RFI contemplates that the managed care organizations might
subcontract with a separate company to provide behavioral healthcare management
as part of an integrated healthcare management offering.

           Currently, Magellan Health Services, Inc. (the "Company"), directly
and through affiliates, provides behavioral healthcare management for Tenncare
enrollees in all regions of Tennessee (Eastern, Middle and Western) pursuant to
contracts directly with the Bureau that terminate on June 30, 2006. The Company
estimates that, for the nine months ended September 30, 2005, revenue derived
from TennCare enrollees residing in the Middle Region amounted to approximately
$120 million. Further information regarding the business the Company does with
the Tenncare program is provided in the Company's Annual Report on Form 10-K for
the year ended December 31, 2004 and its Quarterly Report on Form 10-Q for the
quarter ended September 30, 2005. The Company does not expect that any contract
awarded as a result of the RFI process would become effective before the
expiration of its existing contracts.

           If as a result of the Bureau's consideration of the results of the
RFI a decision were made to seek proposals for integrated healthcare management
of the Tenncare program, the Company anticipates that it would seek to
subcontract to provide behavioral healthcare management for the Tenncare
program; however, there is no assurance that the Company will be able to secure
such an arrangement.

  
ITEM 9.01. FINANCIAL STATEMENTS, PRO FORMA FINANCIAL INFORMATION AND EXHIBITS
 
(a)  Financial Statements of business acquired:        Not applicable.
 
(b)  Pro forma financial information:                  Not applicable.
 
(c)   Exhibits:                                        Not applicable.



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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: November 8, 2005                       

                                                                    








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