Exhibit 10.63a


                        SURRENDER AND ACCEPTANCE OF LEASE
                        ---------------------------------

     SURRENDER  AND  ACCEPTANCE  dated  as of  May  11,  1999,  between  RECKSON
OPERATING  PARTNERSHIP,  L.P. A Delaware limited partnership having an office at
660 White Plains Road,  Tarrytown,  New York 10591  (hereinafter  referred to as
"Landlord"),  WELLCARE  DEVELOPMENT,  INC.,  a New York  Corporation  having  an
address  at 660  White  Plains  Road,  Tarrytown,  New York  10591  (hereinafter
referred to as "Tenant"),  and THE WELLCARE  MANAGEMENT GROUP,  INC., a New York
corporation  having an address at 660 White  Plains  Road,  Tarrytown,  New York
10591 (hereinafter referred to as the "Guarantor").

                                R E C I T A L S:
                                ----------------

     WHEREAS,  Landlord  and  Tenant  entered  into an  Agreement  of Lease (the
"Original  Lease"),  fully executed on or about December 19, 1997, for the lease
of 10,079  rentable  square feet of space (the "Demised  Premises") on the first
(1st) floor of the building  located at 660 White Plains  Road,  Tarrytown,  New
York (the  "Building");  WHEREAS,  in order to induce Landlord to enter into the
Lease, the Guarantor executed and delivered for the benefit of Landlord, and its
successors and assigns, a Guaranty (the "Guaranty"),  dated on or about December
15, 1997, whereby the Guarantor  guaranteed the full and faithful performance of
all obligations of Tenant under the Lease;

     WHEREAS,  Tenant desires to surrender the Lease to Landlord and Landlord is
willing to accept such surrender upon the terms and conditions  hereinafter  set
forth.

     NOW, THEREFORE, in consideration of the premises herein contained,  and the
payments to be delivered to Landlord by Tenant pursuant to this  Agreement,  the
parties agree as follows:

     1. Tenant hereby surrenders to Landlord as of June 15, 1999 (the "Surrender
Date") the Lease and the term and the estate thereby granted,  together with the
premises therein described,  to the extent and purpose that the estate of Tenant
in and to the premises  covered by the Lease shall be wholly  extinguished,  and
that the term of the Lease  shall  expire as of such date in the manner and with
the same effect as if that were the date therein set for the  expiration  of the
term of the Lease.  Accordingly,  on or before the Surrender Date,  Tenant shall
completely vacate and surrender the Demised Premises in broom clean condition in
accordance with all of the applicable provisions of Article 17 of the Lease.

     2. Tenant and the  Guarantor,  jointly  and  severally,  hereby  represent,
warrant and  covenant  that (a)  nothing  has been done or suffered  whereby the
Lease or the term of the estate thereby  granted have been encumbered in any way
whatsoever;  (b) Tenant owns the Lease and has good right to surrender the same;
and (C) no one other than  Tenant has  acquired,  through or under  Tenant,  any
right,  title or  interest  in or to the  Lease or the  term or  estate  thereby
granted or in or to the premises covered thereby.

     3.  Tenant and the  Guarantor  each  hereby  acknowledges  and agrees  that
Landlord  has fully  performed  and  observed  all of the terms,  covenants  and
conditions  under the Lease to be  performed or observed on the part of Landlord
and that there exists absolutely no defense, right of offset, right of abatement
or other  similar  rights of Tenant  under the  Lease.  Finally,  Tenant and the
Guarantor each hereby releases Landlord, and its affiliates,  agents, employees,
successors  and assigns of and from all claims,  demands,  actions and causes of
action of every kind and nature whatsoever  arising out of or in connection with
the Lease.

     4. In  consideration  of Landlord  accepting the surrender of the Lease, as
set forth herein, Tenant and the Guarantor,  jointly and severally,  covenant to
pay to Landlord the sum of  Thirty-Two  Thousand  Seven  Hundred  Fifty-Six  and
76/100  ($32,756.76)  Dollars,  payable in full upon their execution hereof (the
"Surrender Payment").

     5. Upon (a) Landlord's timely receipt, and upon clearance, of the Surrender
Payment  referenced in Section "4" above, and (b) Tenant fully  surrendering and
vacating the Demised Premises (in the manner required under Section 1 hereof) no
later than the  Surrender  Date;  TIME BEING OF THE ESSENCE,  then Landlord does
hereby  release  (i)  Tenant,  its parent and sister  corporations,  affiliates,
agents,  employees,  successors  and  assigns of and from all  claims,  demands,
actions and causes of actions of every kind and nature whatsoever arising out of
or in  connection  with  the  Lease,  (ii)  the  Guarantor  and  any  subsidiary
corporations of and from all claims,  demands,  actions and causes of actions of
every  kind and  nature  whatsoever  arising  out of or in  connection  with the
Guaranty and (iii) Tenant from its  obligation  to pay the  installment  of Rent
otherwise due for the month of June 1999.

     6. Landlord hereby  reserves all rights and remedies  available to it under
the Lease,  the  Guaranty,  at law, in equity or  otherwise  with respect to the
Lease and any default on the part of Tenant  arising  thereunder,  except in the
event that both (a) Landlord has received  timely  payment of, and clearance of,
the Surrender Payment  referenced in Section "4" above, and (b) Tenant has fully
vacated and surrendered the Demised Premises (in the manner set forth in Section
1 hereof) no later than the Surrender  Date;  TIME BEING OF THE ESSENCE.  In the
event of the  failure of either of the above  conditions,  the  release  made by
Landlord in Section "5" hereof  shall be  automatically  void and of no force or
effect  whatsoever,  and  Landlord  shall be free to exercise any and all of the
rights and remedies  referenced in the  preceding  sentence of this Section "6".
Without regard to any default in the timely payment of the Surrender  Payment or
the exercise by Landlord of any such rights or remedies, Tenant hereby expressly
waives any and all rights or redemption with regard to the Lease and the Demised
Premises.

     7. Again,  provided Landlord has received timely payment (and clearance) of
the Surrender  Payment and Tenant has fully vacated and  surrendered the Demised
Premise  (in the  manner  required  under  Section  1 hereof)  on or before  the
Surrender Date; TIME BEING OF THE ESSENCE, then Landlord shall, promptly, but no
later than June 20, 1999,  following  Tenant  having so timely  surrendered  and
vacated  the Demised  Premises,  return to Tenant the  original of that  certain
Standby  Letter of Credit,  dated  December 22, 1997 (as may have been amended),
issued by M&T Bank as further security for the full and faithful  performance of
the obligations of Tenant under the Lease.

     8. Landlord,  Tenant and the Guarantor hereby acknowledge and agree that it
is difficult, if not impossible, to accurately calculate the damages incurred or
to be incurred by Landlord in connection  with the surrender and  termination of
the Lease by Tenant, and that the Surrender Payment is a reasonable  estimate of
such damages as of the date of this Agreement and constitutes  good and valuable
consideration for the covenants and obligations of the parties hereto.  However,
in the event of the failure by Tenant or Guarantor  to fully and timely  perform
any of their respective obligations under this Agreement, such estimate shall in
no manner be construed as a limitation  upon, or waiver of, any damages of which
Landlord  may be entitled to  reimbursement  or  restitution  from Tenant or the
Guarantor whose release by Landlord is made void and ineffective pursuant to the
terms of this Agreement as a result of such failure.

     9. This Surrender and Acceptance Agreement may be executed in counterparts.

     10. This  represents  the complete  agreement of the parties hereto and may
not be amended except by written modification executed by the parties.

     11. The  provisions of this  Agreement  shall not be binding upon any party
hereto unless and until this  Agreement has been executed by and delivered to al
parties hereto.


<PAGE>


     IN WITNESS WHEREOF,  this Surrender and Acceptance  Agreement has been duly
executed by the parties hereto as of the day and year first above written.

                                        RECKSON OPERATING PARTNERSHIP, L.P.
                                        By:  Reckson Associates Realty
                                             Corp., its general partner


                                        By:  /s/ Salvatore Campofranco
                                             -----------------------------


                                        WELLCARE DEVELOPMENT, INC.


                                        By:  /s/ Mary Lee Campbell-Wisley
                                             -----------------------------


                                        THE WELLCARE MANAGEMENT GROUP


                                        By:  /s/ Craig S. Dupont
                                             -----------------------------