<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>3
<FILENAME>green10qex991063002.txt
<DESCRIPTION>CERTIFICATION OF CHIEF EXECUTIVE OFFICER
<TEXT>




                                                                    Exhibit 99.1

                            CERTIFICATION PURSUANT TO
                             18 U.S.C. SECTION 1350,
                             AS ADOPTED PURSUANT TO
                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002


In  connection  with  the  Quarterly  Report  of  Greenbriar   Corporation  (the
"Company")  on Form 10-Q for the period  ending  June 30, 2002 as filed with the
Securities and Exchange Commission on the date hereof (the "Report"), I James R.
Gilley, Chief Executive Officer of the Company,  certify,  pursuant to 18 U.S.C.
ss. 1350, as adopted pursuant to ss. 906 of the Sarbanes-Oxley Act of 2002, that
to the best of my knowledge and belief:



         (1) The Report fully complies with the requirements of Section 13(a) or
15(d) of the Securities Exchange Act of 1934; and



         (2) The  information  contained in the Report fairly  presents,  in all
material  respects,  the  financial  condition  and result of  operations of the
Company.



/s/ James R. Gilley
-----------------------
James R. Gilley
Chief Executive Officer

August 14, 2002


</TEXT>
</DOCUMENT>
