EXHIBIT 10.21

                                DEMAND NOTE


  $15,000 USD                                         Date:  July 1, 1999


       FOR VALUE RECEIVED, the undersigned promises  to pay to the  order
  of Mainstream Enterprises, LLC (the "Payee"),  at such place as  holder
  of this note will  designate, in lawful money  of the United States  of
  America, and  as hereinafter  provided, the  principal sum  of  fifteen
  thousand dollars, with  no interest  on the  part of  a said  principal
  amount.

       The Principal of  this Note will  be payable in  sixty days or  as
  otherwise agreed to between  Payor and Payee.   The Payor reserves  the
  right to deduct any portion of the payment from debt owed to Payor. The
  undersigned will have the right and  privilege of prepaying all or  any
  part of this note at any time without notice or penalty.

       In no event will the aggregate  of the interest on this note,  and
  any other amounts paid by the undersigned in connection with this  note
  which would under Applicable Law be deemed "interest," ever exceed  the
  maximum amount  of  interest  that,  under  Applicable  Law,  could  be
  lawfully  charged  on  this  note,  The  holder  and  the   undersigned
  specifically intend  and  agree  to limit  contractually  the  interest
  payable of  this note  to not  more than  an amount  determined at  the
  Maximum Rate.  Therefore, none of the  terms of this note will ever  be
  construed to create a contract to pay  interest at a rate in excess  of
  the Maximum  Rate, and  neither the  undersigned nor  any other  liable
  parties here for will  ever are liable for  interest in excess of  that
  determined at the Maximum  Rate, and the  provisions of this  paragraph
  control over  all other  provisions of  this note.   If  any amount  of
  interest taken or received  by the holder hereof  will be in excess  of
  the maximum  amount  of  interest that,  under  Applicable  Law,  could
  lawfully have been  collected on  this note,  then the  excess will  be
  deemed to have been the result  of a mathematical error by the  parties
  hereto and  will  be  applied  as a  credit  against  the  then  unpaid
  principal amount on the note or  refunded promptly to the  undersigned,
  at the holder's  option.   All amounts  paid or  agreed to  be paid  in
  connection with  the indebtedness  evidenced by  this note  that  would
  under Applicable Law be deemed "interest" will, to the extent permitted
  by  Applicable  Law,  be  amortized,  prorated,  allocated  and  spread
  throughout the full term of this note.

       "Applicable Law" means the applicable law, if any, of the State of
  Texas or of the United  States of America in  effect from time to  time
  which lawfully then permits the charging and collection of the  highest
  permissible lawful nonusers rate  of interest on  this note.   "Maximum
  Rate" means  the maximum  lawful nonuser's  rate of  interest, if  any,
  which under Applicable Law the holder hereof is permitted to charge the
  undersigned on this note from time to time.
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       This note will become immediately due  and payable, at the  option
  of the holder hereof,  without presentment or demand  or any notice  to
  the undersigned or any other person obligated hereon, upon the  default
  in the  payment of  any  installment of  the  principal hereof  or  any
  interest hereon when due.

       In the event this note, or  any part hereof, is collected by  suit
  or through  the  Probate  or Bankruptcy  Court  or  through  any  other
  judicial proceeding, by an attorney of if this note or any  installment
  thereof is not paid at maturity,  however such maturity may be  brought
  about, or when due, and this note is placed in the hands of an attorney
  for collection after maturity, then the undersigned agrees and promises
  to pay, in addition to all other amounts owing hereunder, a  reasonable
  attorney's fee for collection.

       The undersigned and each maker, surety  and endorser of this  note
  expressly waive all notices, of demand or otherwise, presentations  for
  payment, notices of intention to  accelerate the maturity, protest  and
  notice of  protest, as  to this  note and  as to  each, every  and  all
  installments hereof, and further  agree that it  will not be  necessary
  for any holder  hereof, in order  to enforce payment  of this note,  to
  first institute suites  or exhaust its  remedies against  any maker  of
  other liable here for, and each consents that the Payee or other holder
  of this note may at any time, and from time to time, upon request of or
  by agreement with any of the  same, extend the date of maturity  hereof
  or change the time or method of  payments without notice to any of  the
  other makers,  sureties or  endorsers, who  will remain  bound for  the
  payment hereof.

                                Payor:
                                American HealthChoice, Inc


                                /s/  Dr.   J.W. Stucki
                                Dr. J.W. Stucki, President