<ARTICLE>                     5
<LEGEND>
THIS SCHEDULE CONTAINS SUMMARY FINANCIAL INFORMATION EXTRACTED FROM COMPANY'S
CONDENSED CONSOLIDATED BALANCE SHEET AND STATEMENT OF INCOME 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

                                          
<PERIOD-TYPE>                 9-MOS             9-MOS
<FISCAL-YEAR-END>             DEC-31-2000       DEC-31-1999
<PERIOD-START>                JAN-01-2000       JAN-01-1999
<PERIOD-END>                  SEP-30-2000       SEP-30-1999
<EXCHANGE-RATE>                         1                 1
<CASH>                             26,051            29,064
<SECURITIES>                       43,718            44,832
<RECEIVABLES>                     101,959           114,574
<ALLOWANCES>                       (4,841)           (3,200)
<INVENTORY>                             0                 0
<CURRENT-ASSETS>                  203,835           201,354
<PP&E>                            100,554           101,713
<DEPRECIATION>                     32,012            47,168
<TOTAL-ASSETS>                    285,253           275,614
<CURRENT-LIABILITIES>              68,286            62,123
<BONDS>                                 0                 0
<PREFERRED-MANDATORY>                   0                 0
<PREFERRED>                             0                 0
<COMMON>                              282               358
<OTHER-SE>                        207,645           204,033
<TOTAL-LIABILITY-AND-EQUITY>      285,253           275,614
<SALES>                           243,896           253,123
<TOTAL-REVENUES>                  243,896           253,123
<CGS>                             176,502           161,540
<TOTAL-COSTS>                     127,365           106,781
<OTHER-EXPENSES>                   (2,928)             (154)
<LOSS-PROVISION>                    1,736             1,258
<INTEREST-EXPENSE>                      5               862
<INCOME-PRETAX>                   (57,043)          (15,044)
<INCOME-TAX>                      (19,744)           (5,394)
<INCOME-CONTINUING>               (37,299)           (9,650)
<DISCONTINUED>                          0                 0
<EXTRAORDINARY>                         0                 0
<CHANGES>                               0                 0
<NET-INCOME>                      (37,299)           (9,650)
<EPS-BASIC>                         (1.33)            (0.35)
<EPS-DILUTED>                       (1.33)            (0.34)