Document:

CCC OF NEW JERSEY, INC.
                 197 FIRST AVENUE, NEEDHAM, MASSACHUSETTS 02494

                                                                  Exhibit 10.187
                                                            As of March 30, 1999

CareMatrix of Princeton (SNF), Inc.
197 First Avenue
Needham, Massachusetts 02494

      Re:   Lease dated as of August 7, 1998, by and between CCC of New Jersey,
            Inc. ("Chancellor"), as landlord, and CareMatrix of Princeton (SNF),
            Inc. ("CareMatrix"), as tenant (the "Lease")

Ladies and Gentlemen:

      This letter agreement is intended to confirm our understanding with
respect to certain aspects of the above-referenced Lease, and to acknowledge the
payment by you of certain amounts in connection therewith. Capitalized terms
used herein and not defined herein shall have the meanings for such terms set
forth in the Lease.

      CareMatrix and Chancellor hereby confirm and agree that in connection with
our entering into the Lease, CareMatrix agreed to bear all expenses incurred in
connection with the operation of the Leased Property, including, without
limitation, that certain working capital loan from The Chase Manhattan Bank in
the original principal amount of $2,000,000 (the "W/C Loan").

      We hereby acknowledge that we have received from you today the sum of
$2,000,000, which amount has been used by us to payoff and discharge in full all
obligations under the W/C Loan.

      Please indicate your acknowledgement and agreement to the matters set
forth herein by signing the enclosed counterpart of this letter where indicated
and returning it to the undersigned.

                                                Very truly yours,

                                                CCC OF NEW JERSEY, INC.

                                                By:/s/ Abraham D. Gosman
                                                   ------------------------
                                                Name:
                                                Title:
                                                hereunto duly authorized

Acknowledged and agreed as of this 30th day of March, 1999

CAREMATRIX OF PRINCETON (SNF), INC.

By:/s/ David B. Currie
   -------------------
Name: David B. Currie
Title:VP
hereunto duly authorizedExhibit 10.188
                              ASSIGNMENT AGREEMENT

      THIS ASSIGNMENT AGREEMENT (this "Agreement") made as of this 30th day of
March, 1999 by and between CAREMATRIX OF MASSACHUSETTS, INC., a Delaware
corporation ("Assignee") and CHANCELLOR OF GLEN COVE, INC., a Delaware
corporation ("Assignor").

                               W I T N E S S E T H

      WHEREAS, Assignee is a member of Chancellor Dexter, LLC (the "CD"), a copy
of the operating agreement of which is attached hereto as Exhibit A (the "CD LLC
Agreement"); and

      WHEREAS, CD is the sole member of Great Neck Holding, LLC ("GNH"), a copy
of the of the operating agreement of which is attached hereto as Exhibit B (the
"GNH LLC Agreement"); and

      WHEREAS, GNH is the owner and operator of a certain senior housing
facility located in Great Neck, New York, known as The Mayfair at Great Neck;
and

      WHEREAS, CD is the sole stockholder of Glen Cove Holding Corporation
("GCHC"), copies of the articles of organization and by-laws of which are
attached hereto as Exhibit C (the "GCHC Organizational Documents"); and

      WHEREAS, CD and GCHC are the sole members of The Mayfair at Glen Cove, LLC
("MGC") a copy of the operating agreement of which is attached hereto as Exhibit
D (the "MGC LLC Agreement"); and

      WHEREAS, MGC is the owner and operator of a certain senior housing
facility located in Glen Cove, New York, known as The Mayfair at Glen Cove; and

      WHEREAS, pursuant to the CD LLC Agreement, the GNH LLC Agreement, the GCHC
Organizational Documents, and the MGC LLC Agreement, Assingor is entitled to
receive certain net cash flow from The Mayfair at Great Neck and The Mayfair at
Glen Cove (the "Net Cash Flow"); and

      WHEREAS, Assignor desires to assign all of its right, title and interest
in and to the Net Cash Flow to Assignee, and Assignee desires to acquire the
same.

      NOW, THEREFORE, in consideration of the premises and the mutual covenants
herein contained, the parties hereto hereby agree as follows:

      1.    In consideration of $4,000,000, paid this day by Assignee, Assignor
            hereby assigns, sets over and transfers unto Assignee to have and to
            hold from and after the date

<PAGE>

            hereof, all of the right, title and interest of Assignor in, to and
            under the CD LLC Agreement, the GNH LLC Agreement, the GCHC
            Organizational Documents, and the MGC LLC Agreement, all Net Cash
            Flow received or receivable by Assignor.

      2.    Assignor hereby warrants and represents that (a) the CD LLC
            Agreement, the GNH LLC Agreement, the GCHC Organizational Documents,
            and the MGC LLC Agreement are each in full force and effect, (b)
            Assignor has not received any notice of default with respect to any
            such documents or Assignor's right to receive theNet Cash Flow, (c)
            the document or documents attached hereto as Exhibit A, Exhibit B,
            Exhibit C, and Exhibit D, constitute a true, correct and complete
            copies of the CD LLC Agreement, the GNH LLC Agreement, the GCHC
            Organizational Documents, and the MGC LLC Agreement, respectively,
            and (d) Assignor has obtained any and all consents needed in
            connection with the matters contemplated hereby, including, without
            limitation, any and all consents required under the CD LLC
            Agreement, the GNH LLC Agreement, the GCHC Organizational Documents,
            and the MGC LLC Agreement.

      3.    Assignor hereby covenants and agrees to take such further actions as
            Assignee deems reasonably necessary to enable Assignee to receive
            the benefits contemplated by this Agreement.

      4.    This Agreement (i) shall be binding upon and inure to the benefit of
            the parties hereto and their respective successors and assigns, (ii)
            shall be governed by the laws of the Commonwealth of Massachusetts,
            and (iii) may not be modified orally, but only by a writing signed
            by each of Assignor and Assignee.

                         [SIGNATURES ON FOLLOWING PAGE]
                [REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

<PAGE>

      IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement
as of the date and year first above written.

                                    CHANCELLOR OF GLEN COVE, INC.

                                    By: /s/ Abraham D. Gosman
                                      ---------------------------
                                    Name:
                                    Title:
                                    hereunto duly authorized

                                    CAREMATRIX OF MASSACHUSETTS, INC.

                                    By: /s/ David B. Currie
                                      ---------------------------
                                    Name: David B. Currie
                                    Title: VP
                                    hereunto duly authorizedExhibit 10.189

                              ASSIGNMENT AGREEMENT

      THIS ASSIGNMENT AGREEMENT (this "Agreement") made as of this 8th day of
September, 1999 by and between CAREMATRIX OF MASSACHUSETTS, INC., a Delaware
corporation ("Assignee") and ABRAHAM D. GOSMAN, an individual resident of
Florida, in his individual capacity and on behalf of the "ADG Entities" set
forth on Schedule 1 attached hereto ("Assignor").

                              W I T N E S S E T H

      WHEREAS, Assignor holds, directly or indirectly, certain interests in the
entities identified as the "Subject Partnerships" set forth on Schedule 1
attached hereto (collectively, the "Partnerships"); and

      WHEREAS, pursuant to the partnership agreements and other constituent
documents of the Partnerships (the "Partnership Documents"), Assignor has the
right to receive distributions from the Partnerships (the "Partnership
Distributions"); and

      WHEREAS, Assignor desires to assign all of its right, title and interest
in and to certain Partnership Distributions to Assignee, and Assignee desires to
acquire the same.

      NOW, THEREFORE, in consideration of the premises and the mutual covenants
herein contained, the parties hereto hereby agree as follows:

      1.    In consideration of $1,700,000, paid this day by Assignee, Assignor
            hereby assigns, sets over and transfers unto Assignee to have and to
            hold from and after the date hereof, all of the right, title and
            interest of Assignor in, to and under the Partnership Agreement, to
            all Partnership Distributions received or receivable by Assignor
            until such time as Assignee has received and amount equal to the sum
            of (a) $1,700,000, plus (b) the product of (i) $1,700,000, (ii) the
            Interest Factor (hereinafter defined), and (iii) the number of days
            from the date hereof until Assignee receives all Partnership
            Distributions it is entitled to receive hereunder. The "Interest
            Factor" shall be the so-called "Prime Rate" or "Base Rate" of the
            Chase Manhattan Bank in effect as of the date hereof calculated on a
            daily rate. A sample calculation is attached hereto as Exhibit B.

      2.    Assignor hereby warrants and represents that (a) the Partnership
            Documents are in full force and effect, (b) Assignor has not
            received any notice of default with respect to the Partnership
            Documents or Assignor's right to receive the Partnership
            Distributions, (c) the document or documents attached hereto as
            Exhibit A constitute a true, correct and complete copy of the
            Partnership Documents, and (d) Assignor has obtained any and all
            consents needed in connection with the matters contemplated hereby,
            including, without limitation, any and all consents from the
            Partnerships.

<PAGE>

      3.    Assignor hereby covenants and agrees to take any and all steps
            deemed reasonably necessary by Assignee in order to assist Assignee
            in collecting the Partnership Distributions and otherwise receiving
            the benefits of this Agreement.

      4.    This Agreement (a) shall be binding upon and inure to the benefit of
            the parties hereto and their respective successors and assigns, (b)
            shall be governed by the laws of the Commonwealth of Massachusetts,
            and (c) may not be modified orally, but only by a writing signed by
            each of Assignor and Assignee.

                              [SIGNATURES ON FOLLOWING PAGE]
                    [REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

<PAGE>

      IN WITNESS WHEREOF, the parties hereto have duly executed this Agreement
as of the date and year first above written.

                                     /s/ Abraham D. Gosman
                                     -------------------------------------
                                     Name:  Abraham D. Gosman

                                    CAREMATRIX OF MASSACHUSETTS, INC.

                                    By: /s/ David B. Currie
                                       -----------------------------------
                                       Name: David B. Currie
                                       Title: Senior Vice President
                                       hereunto duly authorized

<PAGE>

                                   SCHEDULE 1

                      (Subject Partnerships & ADG Entities)

--------------------------------------------------------------------------------
          Subject Partnerships                        ADG Entities
          --------------------                        ------------
--------------------------------------------------------------------------------
De Guardiola Development Ventures        A.M.A Florida Land Ventures, Inc.
--------------------------------------------------------------------------------
North County Land Holdings, Ltd.         A.M.A Florida Land Ventures I, Inc.
                                         North County Land Equity Corporation
                                         (50% interest)
--------------------------------------------------------------------------------
Workplace Holdings, Ltd.                 AMA Florida Land Ventures I, Inc.
--------------------------------------------------------------------------------
Biltmore Medical Equity Investors, Ltd.  Abraham D. Gosman, Trustee of the
                                         Andrew Gosman 1995 Indenture of Trust
                                         Abraham D. Gosman, Trustee of the
                                         Michael Gosman 1995 Indenture of Trust
                                         Abraham D. Gosman
--------------------------------------------------------------------------------
Morristown Medical Equity Investors,     Abraham D. Gosman, Trustee of the
Ltd.                                     Andrew Gosman 1995 Indenture of Trust
                                         Abraham D. Gosman, Trustee of the
                                         Michael Gosman 1995 Indenture of Trust
                                         Abraham D. Gosman
--------------------------------------------------------------------------------
Okatie I Medical Investors, Ltd.         Abraham D. Gosman, Trustee of the
                                         Andrew Gosman 1995 Indenture of Trust
                                         Abraham D. Gosman, Trustee of the
                                         Michael Gosman 1995 Indenture of Trust
                                         Abraham D. Gosman
--------------------------------------------------------------------------------
SRH I Medical Equity Investors, Ltd.     Abraham D. Gosman
--------------------------------------------------------------------------------
Town Center I Commercial Investors, Ltd. AMA Florida Land Ventures I, Inc.
--------------------------------------------------------------------------------
Town Center I Residential Investors,     AMA Florida Land Ventures I, Inc.
Ltd.
--------------------------------------------------------------------------------
Town Center I Theatre Investors, Ltd.    AMA Florida Land Ventures I, Inc.
--------------------------------------------------------------------------------

<PAGE>

                                    EXHIBIT A
                                    ---------

                             (Partnership Documents)

<PAGE>

                                    EXHIBIT B
                                    ---------

                              (sample calculation)

      If the Interest Factor is 0.00022 (based on a Chase Prime Rate of 8%, and
a 360 day year), and the Partnerships make their first distributions to Assignor
on the date that is 100 days after the date of this Assignment in the amount of
$2,000,000, Assignee shall be entitled to the first $1,737,400 of such
distributions, and Assignor shall be entitled to retain the balance.

      (a) = $1,700,000
      (b) = (i) $1,700,000 x (ii) 0.00022 x (iii) 100 days = $37,400

      (a) + (b) = $1,700,000 + $37,400 = $1,737,400

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