<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
     THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM THE 
     COMPANY'S CONDENSED CONSOLIDATED BALANCE SHEET AND STATEMENT OF INCOME
     TAXES QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FORM 10-Q.
</LEGEND>
<CIK>                         0001001185
<NAME>                        IDX Systems Corporation
<MULTIPLIER>                  1,000
<CURRENCY>                    U.S. Dollars
       
<S>                           <C>                      <C>                
<PERIOD-TYPE>                 9-MOS                    9-MOS
<FISCAL-YEAR-END>             DEC-31-1997              DEC-31-1996
<PERIOD-START>                JAN-01-1997              JAN-01-1996
<PERIOD-END>                  SEP-30-1997              SEP-30-1996
<EXCHANGE-RATE>                         1                        1                         
<CASH>                             19,930                   13,930                 
<SECURITIES>                      101,017                   99,905               
<RECEIVABLES>                      55,252                   45,013                
<ALLOWANCES>                       (1,209)                    (751) 
<INVENTORY>                             0                        0       
<CURRENT-ASSETS>                  181,759                  166,320               
<PP&E>                             51,863                   39,339            
<DEPRECIATION>                     25,219                   18,249            
<TOTAL-ASSETS>                    215,677                  195,742             
<CURRENT-LIABILITIES>              44,727                   38,323            
<BONDS>                             2,500                    2,700            
<PREFERRED-MANDATORY>                   0                        0            
<PREFERRED>                             0                        0            
<COMMON>                              257                      224                
<OTHER-SE>                         163,449                 151,019            
<TOTAL-LIABILITY-AND-EQUITY>       215,677                 195,742            
<SALES>                             43,495                  36,158           
<TOTAL-REVENUES>                   181,589                 152,104            
<CGS>                               31,975                  27,426                 
<TOTAL-COSTS>                      181,160                 135,542            
<OTHER-EXPENSES>                         0                       0   
<LOSS-PROVISION>                       592                      95
<INTEREST-EXPENSE>                      99                     122         
<INCOME-PRETAX>                      4,583                  20,039          
<INCOME-TAX>                         3,566                   7,908          
<INCOME-CONTINUING>                  1,017                  12,131          
<DISCONTINUED>                           0                       0       
<EXTRAORDINARY>                          0                       0          
<CHANGES>                                0                       0      
<NET-INCOME>                         1,017                  12,131          
<EPS-PRIMARY>                          .04                     .48        
<EPS-DILUTED>                          .04                     .48
        


</TABLE>