EXHIBIT 10.11
-------------
                         ASSIGNMENT OF OIL AND GAS LEASE

Summitt Oil and Gas, Inc. ("Assignor") and National Health Care Technology, Inc.
("Assignee") agree that:

                                Identity of Lease


WHEREAS,  Assignor  is Lessee  under an Oil and Gas Lease  executed  on April 4,
2006, by Assignor as Lessee and Summitt Oil & Gas, Inc. as Lessor,  covering the
real  property in the County of Custer,  Oklahoma,  described  as  follows:  SEC
25-T12N-R14W, SE/4, CUSTER, OK;, comprising of 160 acres .

WHEREAS, that lease is duly recorded in Book 1265 at Pages 92-93 of the official
records of the county of Custer, Oklahoma, filed January 25, 2005:

                                   Assignment


NOW, THEREFORE, in consideration for the sum of US$400,000 paid by 77,000 shares
in  National   Healthcare   Technology,   Inc.   and  other  good  and  valuable
consideration,  receipt of which is hereby  acknowledged,  Assignor  does hereby
sell, assign,  transfer, and convey to National Healthcare Technology,  Inc. all
of  Assignor's  right,  title,  and interest in the lease and the real  property
covered by the lease, on the following terms and conditions:

                                Override Royalty

1. There is excepted from the above  assignment  and conveyance and reserved and
retained in Assignor an  overriding  royalty equal to 3% of the value of all oil
produced and removed  under the lease and the net proceeds  received by Assignee
from the sale of all gas and  casinghead  gasoline  produced  and sold under the
lease.  2. The  overriding  royalty  reserved and retained by Assignor  shall be
payable to Assignor at the same time,  and shall be computed in the same manner,
as is provided  in the lease for the  payment,  and  computation,  of  royalties
payable under it to Lessor.
                            Assignee to Perform Lease

3. Assignee  accepts,  on the terms and  conditions  specified in this document,
this  assignment of lease and agrees to truly and fully perform all of the terms
and conditions of the lease to be performed under the lease by Lessee.

                               Indemnity Agreement

4.  Assignee  shall  indemnify  and hold  Assignor and the property of Assignor,
including Assignor's interest under this instrument,  free and harmless from all
claims,   liability,   loss,   damage,  or  expense  resulting  from  Assignee's
performance of the lease, Assignee's occupation of any part of the real property
covered by the lease,  or the  exploration  for, or extraction by Assignee under
the lease of, any oil, gas, or other hydrocarbon substances.

                       Modification and Extension of Lease

5.  Assignee  shall have the right to obtain  from  Lessor  under the lease,  or
Lessor's  successor in interest as Lessor under the lease, any  modifications or
extensions of the lease  Assignee may desire,  as long as the  modifications  or
extensions do not reduce in any way the overriding royalty reserved and retained
by  Assignor  under  this  instrument  or  otherwise  infringe  on any rights of
Assignor under this instrument.

                                      -1-
<PAGE>

                                 Default Clause

7. Should Assignee fail to commence  drilling  operations on the land covered by
the lease within one year after the date of this instrument,  or should Assignee
fail or  default  in the  performance  of the  lease  or this  instrument,  then
Assignor may, at Assignor's  option,  either declare Assignee's rights under the
lease and this instrument forfeited and resume its, Assignor's, status as Lessee
under the lease or bring  appropriate  action in law or equity either to enforce
this instrument or to recover appropriate damages.

                                 Access to Wells

8.  Assignor  shall  have  access to any well  drilled by  Assignee  on the land
covered by the lease and shall have the  privilege of  witnessing  all tests and
operations  conducted on or in connection with any such well. On written request
of Assignor, Assignee agrees to furnish Assignor with copies of logs and reports
obtained or prepared in connection  with any well drilled on the land covered by
the lease.

                              Assignor's Warranties

9.  Assignor  makes no warranty of title with respect to the land covered by the
lease,  but Assignor does warrant and represent to Assignee that:

         (a) The rights and interest conveyed to Assignee by this instrument are
         free and clear of all  liens,  charges,  and  encumbrances  created  by
         Assignor;

         (b)  Assignor  has  the  right  to make  the  transfer  and  conveyance
         effectuated by this instrument;

         (c) No default or defaults  now exist or have been  declared  under the
         lease; and

         (d) The lease is now in good standing and in full force and effect.

                         Manner of Payments to Assignor

10. All moneys  payable  under this  agreement by Assignee to Assignor  shall be
deemed  duly paid  when a check for them  payable  to the order of  Assignor  is
deposited in the United States mail,  first-class postage prepaid,  addressed to
Assignor at its  office,  9595  Wilshire  Bl.,  #510,  Beverly  Hills,  CA 90210
Assignor  may from time to time  change  depositories  for the  purpose  of this
paragraph by giving written notice of the change and the name and address of the
new  depository  to Assignee in the manner  prescribed  by  Paragraph 11 of this
instrument.

                                     Notices

11.  All  notices  or  other  communications   required  or  permitted  by  this
instrument,  the  lease,  or by law to be served on or given to either  party to
this agreement, Assignor or Assignee, by the other party shall be in writing and
shall be deemed duly served when personally delivered to the party to whom it is
directed  or when  deposited  in the United  States  mail,  first-class  postage
prepaid,  addressed to Assignor at 9595  Wilshire  Bl.,  #510,  Beverly Hills CA
90210 or to Assignee at 1660 Union St., #200, San Diego CA 92120.  Either party,
Assignor or Assignee,  may change its address for the purpose of this  paragraph
by giving  written  notice  of that  change  to the  other  party in the  manner
provided in this paragraph.

                                      -2-
<PAGE>

                                 Attorney's Fees

12. Should any  litigation be commenced  between the parties to this  instrument
concerning the  assignment and transfer made by it, the lease,  or the rights or
duties of either  party in  relation  to the  lease or to this  instrument,  the
party, Assignor or Assignee, prevailing in that litigation shall be entitled, in
addition  to  such  other  relief  as may be  granted,  to a  reasonable  sum as
attorney's fees in the litigation, which shall be determined by the court in the
litigation or in a separate action brought for that purpose.

                                Binding on Heirs

13.  All of the terms  and  provisions  of this  instrument  shall  inure to the
benefit  of and  shall  be  binding  on the  heirs,  executors,  administrators,
representatives,  successors,  and  assigns  of  each  of the  parties  to  this
agreement.
                             Sole and Only Agreement

14. This instrument constitutes the sole and only agreement between Assignor and
Assignee  respecting  the lease or the  assignment  of the lease by  Assignor to
Assignee,  and correctly sets forth the  obligations of Assignor and Assignee to
each other as of its date.  Any  agreements or  representations  respecting  the
lease or its  assignment to Assignee not expressly set forth in this  instrument
are null and void.


EXECUTED on April 4, 2006, at Beverly Hills, CA

ASSIGNOR:

Summitt Oil & Gas, Inc.


/s/  Mark Anderson
---------------------------------
Mark Anderson, President


ASSIGNEE:


National Health Care Technology, Inc.

/s/ Ross Lyndon-James
---------------------------------
Ross Lyndon-James, President


                                      -3-