<TABLE> <S> <C>


<ARTICLE>                     5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM COMPANY'S
CONDENSED CONSOLIDATED BALANCE SHEET AND STATEMENT OF INCOME TAXES AND IS
QUALIFIED IN ITS ENTIRETY BY REFERENCE TO SUCH FINANCIAL STATEMENTS.
</LEGEND>
<CIK>                         0001001185
<NAME>                        IDX SYSTEMS CORPORATION
<MULTIPLIER>                  1,000
<CURRENCY>                    U.S. DOLLARS

<S>                           <C>                <C>               <C>
<PERIOD-TYPE>                 3-MOS              6-MOS             9-MOS
<FISCAL-YEAR-END>             DEC-31-1999        DEC-31-1999       DEC-31-1999
<PERIOD-START>                JAN-01-1999        JAN-01-1999       JAN-01-1999
<PERIOD-END>                  MAR-31-1999        JUN-30-1999       SEP-30-1999
<EXCHANGE-RATE>                         1                  1                 1
<CASH>                             19,819              7,338            29,064
<SECURITIES>                       94,026             63,281            44,832
<RECEIVABLES>                      87,136            114,518           114,574
<ALLOWANCES>                       (1,556)            (2,724)           (3,200)
<INVENTORY>                             0                  0                 0
<CURRENT-ASSETS>                  213,934            203,520           201,354
<PP&E>                             80,281             94,093           101,713
<DEPRECIATION>                     40,257             43,520            47,168
<TOTAL-ASSETS>                    270,600            274,104           275,614
<CURRENT-LIABILITIES>              45,466             63,227            62,123
<BONDS>                                 0                  0                 0
<PREFERRED-MANDATORY>                   0                  0                 0
<PREFERRED>                             0                  0                 0
<COMMON>                              267                357               358
<OTHER-SE>                        215,608            201,285           204,033
<TOTAL-LIABILITY-AND-EQUITY>      270,600            274,104           275,614
<SALES>                            69,650            160,905           253,123
<TOTAL-REVENUES>                   69,650            160,905           253,123
<CGS>                              48,803            105,098           161,540
<TOTAL-COSTS>                      33,754             72,434           106,781
<OTHER-EXPENSES>                    1,171                381              (156)
<LOSS-PROVISION>                      617                733             1,258
<INTEREST-EXPENSE>                    637                858               862
<INCOME-PRETAX>                   (14,078)           (17,008)          (15,044)
<INCOME-TAX>                       (5,500)            (6,180)           (5,394)
<INCOME-CONTINUING>                (8,578)           (10,828)           (9,650)
<DISCONTINUED>                          0                  0                 0
<EXTRAORDINARY>                         0                  0                 0
<CHANGES>                               0                  0                 0
<NET-INCOME>                       (8,578)           (10,828)           (9,650)
<EPS-BASIC>                         (0.31)             (0.39)            (0.35)
<EPS-DILUTED>                       (0.30)             (0.38)            (0.34)




</TABLE>