Document:

<PAGE>   1
                                                                     EXHIBIT 4.1

                          [Specimen Stock Certificate]

                            ODYSSEY HEALTHCARE, INC.

              INCORPORATED UNDER THE LAWS OF THE STATE OF DELAWARE

<Table>
<S>                                                <C>
                  COMMON STOCK                     SEE REVERSE FOR CERTAIN DEFINITIONS
         THIS CERTIFICATE IS TRANSFERABLE                       AND LEGENDS
IN NEW YORK, NEW YORK AND GLENDALE, CALIFORNIA.              CUSIP 67611V 10 1
</Table>

             THIS CERTIFIES THAT

               IS THE OWNER OF

         FULLY PAID AND NON-ASSESSABLE SHARES OF THE PAR VALUE OF $.001 PER
SHARE OF THE COMMON STOCK OF

                            ODYSSEY HEALTHCARE, INC.

transferable on the books of the Corporation in person or by duly authorized
attorney upon surrender of this certificate properly endorsed. This certificate
and the shares represented hereby are issued and shall be held subject to the
provisions of the laws of the State of Delaware and to all of the provisions of
the Certificate of Incorporation and the Bylaws of the Corporation, as amended
from time to time (copies of which are on file at the office of the
Corporation), to all of which the holder of this certificate by acceptance
hereof assents. This certificate is not valid until countersigned by the
Transfer Agent and registered by the Registrar.

         IN WITNESS WHEREOF, the said Corporation has caused this certificate to
be signed by its duly authorized officers and its corporate seal to be hereunto
affixed.

         Dated:

                                [corporate seal]

         [Facsimile Signature]                    [Facsimile Signature]

              PRESIDENT                                SECRETARY

COUNTERSIGNED AND REGISTERED:
                  U.S. STOCK TRANSFER CORPORATION
                                    TRANSFER AGENT AND REGISTRAR

BY

                                            AUTHORIZED SIGNATURE

<PAGE>   2

                            ODYSSEY HEALTHCARE, INC.

THE CORPORATION WILL FURNISH WITHOUT CHARGE TO EACH STOCKHOLDER WHO SO REQUESTS
A STATEMENT OF THE POWERS, DESIGNATIONS, PREFERENCES AND RELATIVE,
PARTICIPATING, OPTIONAL OR OTHER SPECIAL RIGHTS OF EACH CLASS OF STOCK OR SERIES
THEREOF OF THE CORPORATION, AND THE QUALIFICATIONS, LIMITATIONS OR RESTRICTIONS
OF SUCH PREFERENCES AND/OR RIGHTS. SUCH REQUEST MAY BE MADE TO THE CORPORATION
OR THE TRANSFER AGENT.

     The following abbreviations, when used in the inscription on the face of
this certificate, shall be construed as though they were written out in full
according to applicable laws or regulations:

<Table>
<S>           <C>                                   <C>
     TEN COM  - as tenants in common                UNIF GIFT MIN ACT -_______Custodian ____________
     TEN ENT  - as tenants by the entireties                            (Cust)               (Minor)
     JT TEN   - as joint tenants with right                            Under Uniform Gifts to Minors
                of survivorship and not as                             Act _________________________
                tenants in common                                                   (State)
</Table>

                      Additional abbreviations may also be used though not in
the above list.

     For Value Received, ___________________ hereby sell(s), assign(s) and
transfer(s) unto

PLEASE INSERT SOCIAL SECURITY OR OTHER
IDENTIFYING NUMBER OF ASSIGNEE

________________________________________________________________________________

________________________________________________________________________________
                  (PLEASE PRINT OR TYPEWRITE NAME AND ADDRESS,
                    INCLUDING POSTAL ZIP CODE, OF ASSIGNEE)
________________________________________________________________________________

________________________________________________________________________________

______________________________________________________________________ Shares of
the capital stock represented by the within certificate, and do(es) hereby
irrevocably constitute and appoint _____________________________ Attorney to
transfer the said stock on the books of the within-named Corporation with full
power of substitution in the premises.

Dated
      -----------------
                                        SIGNATURE OR REGISTERED OWNER(S):

                  NOTICE:

        THE SIGNATURE(S) TO THIS       X
        ASSIGNMENT MUST CORRESPOND      ----------------------------------------
        WITH THE NAME(S) OF THE                      (SIGNATURE)
        REGISTERED OWNER(S) AS
        WRITTEN UPON THE FACE OF THE   X
        CERTIFICATE IN EVERY            ----------------------------------------
        PARTICULAR WITHOUT ALTERATION                (SIGNATURE)
        OR ENLARGEMENT OR ANY CHANGE
        WHATSOEVER.

                                        ----------------------------------------
                                        THE SIGNATURE(S) SHOULD BE GUARANTEED BY
                                        AN ELIGIBLE GUARANTOR INSTITUTION
                                        (BANKS, STOCKBROKERS, SAVINGS AND LOAN
                                        ASSOCIATIONS AND CREDIT UNIONS WITH
                                        MEMBERSHIP IN AN APPROVED SIGNATURE
                                        GUARANTEE MEDALLION PROGRAM), PURSUANT
                                        TO RULE 17Ad-15 UNDER THE SECURITIES
                                        EXCHANGE ACT OF 1934, AS AMENDED.
                                        ----------------------------------------
                                        SIGNATURES(S) GUARANTEED BY:

                                        ----------------------------------------<PAGE>   1
                                                                  EXHIBIT 10.1.2

                                 $20,000,000.00

                                 AMENDMENT NO.1

                                       TO

                AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT

                     originally dated as of October 2, 2000

                                  by and among

                            ODYSSEY HEALTHCARE, INC.
                   ODYSSEY HEALTHCARE OF CENTRAL INDIANA, INC.
                    ODYSSEY HEALTHCARE OF PENNSYLVANIA, INC.
                     ODYSSEY HEALTHCARE OF NEW JERSEY, INC.
                     ODYSSEY HEALTHCARE OF NORTH TEXAS, INC.
                       ODYSSEY HEALTHCARE OF PHOENIX, INC.
                      ODYSSEY HEALTHCARE OF LAS VEGAS, INC.
                       ODYSSEY HEALTHCARE OF HOUSTON, INC.
                     ODYSSEY HEALTHCARE OF NEW ORLEANS, INC.
                       ODYSSEY HEALTHCARE OF GEORGIA, INC.
                       ODYSSEY HEALTHCARE OF DETROIT, INC.
                     ODYSSEY HEALTHCARE OF BIRMINGHAM, INC.

                                       and

                         HELLER HEALTHCARE FINANCE, INC.

                          Amended as of March 29, 2001

                                      -1-

<PAGE>   2

       AMENDMENT NO. 1 TO AMENDED AND RESTATED LOAN AND SECURITY AGREEMENT

         THIS AMENDMENT NO. 1 TO THE AMENDED AND RESTATED LOAN AND SECURITY
AGREEMENT (this "Amendment") is made as of this 29th day of March, 2001, by and
among ODYSSEY HEALTHCARE, INC., a Delaware corporation, ODYSSEY HEALTHCARE OF
CENTRAL INDIANA, INC., a Delaware corporation, ODYSSEY HEALTHCARE OF
PENNSYLVANIA, INC., a Delaware corporation, ODYSSEY HEALTHCARE OF NEW JERSEY,
INC., a Delaware corporation, ODYSSEY HEALTHCARE OF NORTH TEXAS, INC., a
Delaware corporation, ODYSSEY HEALTHCARE OF PHOENIX, INC., a Delaware
corporation, ODYSSEY HEALTHCARE OF LAS VEGAS, INC., a Delaware corporation,
ODYSSEY HEALTHCARE OF HOUSTON, INC., a Delaware corporation, ODYSSEY HEALTHCARE
OF NEW ORLEANS, INC., a Delaware corporation, ODYSSEY HEALTHCARE OF GEORGIA,
INC., a Delaware corporation, ODYSSEY HEALTHCARE OF DETROIT, INC., a Delaware
corporation, and ODYSSEY HEALTHCARE OF BIRMINGHAM, INC., a Delaware corporation,
(collectively, "Original Borrower"), and ODYSSEY HEALTHCARE OPERATING B, INC., a
Delaware corporation doing business as "Odyssey HealthCare of Little Rock" ("New
Borrower") and HELLER HEALTHCARE FINANCE, INC., a Delaware corporation
("Lender").

                                    RECITALS

         A. Pursuant to that certain Amended and Restated Loan and Security
Agreement dated October 2, 2000 by and between Borrower and Lender (as amended
hereby and as further amended, modified and restated from time to time,
collectively, the "Loan Agreement"), Lender agreed to make available to Borrower
a revolving credit loan (the "Loan").

         B. Original Borrower now wishes to add New Borrower as a Borrower under
the Loan Agreement.

         C. The parties now desire to amend the Loan Agreement in accordance
with the terms and conditions set forth below.

         NOW, THEREFORE, in consideration of the foregoing, the terms and
conditions set forth in this Amendment, and other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged,
Lender and Borrower hereby agree as follows:

         SECTION 1. DEFINITIONS. Unless otherwise defined in this Amendment, all
capitalized terms shall have the meanings assigned to such terms in the Loan
Agreement.

         SECTION 2. ADDITION OF NEW BORROWER. Original Borrower and Lender agree
that the New Borrower shall from and hereafter be Borrower for all purposes of
the Loan Agreement and other documents. Accordingly, the New Borrower hereby
agrees to be bound by all of the conditions, covenants, representations,
warranties, and other agreements set forth in the Loan

                                      -2-
<PAGE>   3

Agreement, and hereby agrees to promptly execute all further documentation
required by Lender to be executed by the New Borrower, consistent with the terms
of the Loan Agreement.

         SECTION 3. CONFIRMATION OF REPRESENTATIONS AND WARRANTIES. New Borrower
hereby confirms that all of the representations and warranties set forth in
Article IV of the Loan Agreement are true and correct with respect to the New
Borrower, and specifically represents and warrants to Lender that it has good
and marketable title to all of its respective Collateral, free and clear of any
lien or security interest in favor of any other person or entity.

         SECTION 4. GRANT BY NEW BORROWER OF SECURITY INTEREST. Consistent with
the intent of the parties, the undersigned New Borrower hereby grants to Lender
a continuing first priority lien on and security interest in, upon, and to the
Collateral, pursuant to and in accordance with the terms of Article III of the
Loan Agreement.

         SECTION 5. ENFORCEABILITY. This Amendment constitutes the legal, valid
and binding obligation of New Borrower, and is enforceable against each such New
Borrower in accordance with its terms.

         SECTION 6. COSTS. Borrower shall be responsible for the payment of all
costs of Lender incurred in connection with the preparation of this Amendment,
and all reasonable document preparation fees of Lender's in-house counsel.

         SECTION 7. EFFECTIVE DATE. This Amendment shall be effective upon
execution and delivery to Lender of this Amendment by each Borrower.

         SECTION 8. REFERENCE TO THE EFFECT ON THE LOAN AGREEMENT.

                  (a) Upon the effectiveness of this Amendment, each reference
in the Loan Agreement to "this Agreement," "hereunder," "hereof," "herein" or
words of similar import shall mean and be a reference to the Loan Agreement as
amended by this Amendment.

                  (b) Except as specifically amended above, the Loan Agreement,
and all other Loan Documents, shall remain in full force and effect, and are
hereby ratified and confirmed.

                  (c) The execution, delivery and effectiveness of this
Amendment shall not, except as expressly provided in this Amendment, operate as
a waiver of any right, power or remedy of Lender, nor constitute a waiver of any
provision of the Loan Agreement, or any other documents, instruments and
agreements executed or delivered in connection with the Loan Agreement.

         SECTION 9. GOVERNING LAW. This Amendment shall be governed by and
construed in accordance with the laws of the State of Maryland.

         SECTION 10. HEADINGS. Section headings in this Amendment are included
for convenience of reference only and shall not constitute a part of this
Amendment for any other purpose.

         SECTION 11. COUNTERPARTS. This Amendment may be executed in
counterparts, and both counterparts taken together shall be deemed to constitute
one and the same instrument.

                                      -3-
<PAGE>   4

                  IN WITNESS WHEREOF, the parties have caused this Amendment to
be executed as of the date first written above.

                                     LENDER:

                                     HELLER HEALTHCARE FINANCE, INC.
                                     a Delaware corporation

                                     By:  /s/ Anthony Romero
                                        ---------------------------------------
                                        Anthony Romero, Vice President

                                     BORROWER:

                                     ODYSSEY HEALTHCARE, INC.
                                     a Delaware corporation

                                     By:  /s/ Douglas B. Cannon
                                        ---------------------------------------
                                        Douglas B. Cannon, Chief Financial
                                        Officer and Secretary

                                     ODYSSEY HEALTHCARE OF CENTRAL INDIANA, INC.
                                     a Delaware corporation

                                     By:  /s/ Douglas B. Cannon
                                        ---------------------------------------
                                        Douglas B. Cannon, Chief Financial
                                        Officer and Secretary

                                     ODYSSEY HEALTHCARE OF
                                     PENNSYLVANIA, INC.
                                     a Delaware corporation

                                     By:  /s/ Douglas B. Cannon
                                        ---------------------------------------
                                        Douglas B. Cannon, Chief Financial
                                        Officer and Secretary

                    [SIGNATURES CONTINUED ON FOLLOWING PAGE]

                                      -4-
<PAGE>   5

                                     ODYSSEY HEALTHCARE OF
                                     NEW JERSEY, INC.
                                     a Delaware corporation

                                     By:  /s/ Douglas B. Cannon
                                        ---------------------------------------
                                        Douglas B. Cannon, Chief Financial
                                        Officer and Secretary

                                     ODYSSEY HEALTHCARE OF
                                     NORTH TEXAS
                                     a Delaware corporation

                                     By:  /s/ Douglas B. Cannon
                                         --------------------------------------
                                         Douglas B. Cannon, Chief Financial
                                         Officer and Secretary

                                     ODYSSEY HEALTHCARE OF
                                     PHOENIX, INC.
                                     a Delaware corporation

                                     By:  /s/ Douglas B. Cannon
                                        ---------------------------------------
                                        Douglas B. Cannon, Chief Financial
                                        Officer and Secretary

                                     ODYSSEY HEALTHCARE OF
                                     LAS VEGAS, INC.
                                     a Delaware corporation

                                     By:  /s/ Douglas B. Cannon
                                        ---------------------------------------
                                        Douglas B. Cannon, Chief Financial
                                        Officer and Secretary

                                     ODYSSEY HEALTHCARE OF
                                     HOUSTON, INC.
                                     a Delaware corporation

                                     By:  /s/ Douglas B. Cannon
                                        ---------------------------------------
                                        Douglas B. Cannon, Chief Financial
                                        Officer and Secretary

                    [SIGNATURES CONTINUED ON FOLLOWING PAGE]

                                      -5-
<PAGE>   6

                                     ODYSSEY HEALTHCARE OF
                                     NEW ORLEANS, INC.
                                     a Delaware corporation

                                     By:  /s/ Douglas B. Cannon
                                        ---------------------------------------
                                        Douglas B. Cannon, Chief Financial
                                        Officer and Secretary

                                     ODYSSEY HEALTHCARE OF
                                     GEORGIA, INC.
                                     a Delaware corporation

                                     By:  /s/ Douglas B. Cannon
                                        ---------------------------------------
                                        Douglas B. Cannon, Chief Financial
                                        Officer and Secretary

                                     ODYSSEY HEALTHCARE OF
                                     DETROIT, INC.
                                     a Delaware corporation

                                     By:  /s/ Douglas B. Cannon
                                        ---------------------------------------
                                        Douglas B. Cannon, Chief Financial
                                        Officer and Secretary

                                     ODYSSEY HEALTHCARE OF
                                     BIRMINGHAM, INC.
                                     a Delaware corporation

                                     By:  /s/ Douglas B. Cannon
                                        ---------------------------------------
                                        Douglas B. Cannon, Chief Financial
                                        Officer and Secretary

                                     ODYSSEY HEALTHCARE OPERATING B, INC.
                                     a Delaware corporation

                                     By:  /s/ Douglas B. Cannon
                                        ---------------------------------------
                                        Douglas B. Cannon, Chief Financial
                                        Officer and Secretary

                                      -6-

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