<ARTICLE> 5 <CIK> 0000927653 <NAME> McKESSON HBOC, INC. <MULTIPLIER> 1,000 <PERIOD-TYPE> 9-MOS <FISCAL-YEAR-END> MAR-31-2000 <PERIOD-START> APR-01-1999 <PERIOD-END> DEC-31-1999 <CASH> 204,800 <SECURITIES> 195,400 <RECEIVABLES> 3,069,300 <ALLOWANCES> 339,200 <INVENTORY> 4,060,000 <CURRENT-ASSETS> 7,326,500 <PP&E> 1,136,700 <DEPRECIATION> 587,500 <TOTAL-ASSETS> 10,205,900 <CURRENT-LIABILITIES> 5,646,000 <BONDS> 914,800 <PREFERRED-MANDATORY> 195,700 <PREFERRED> 0 <COMMON> 2,800 <OTHER-SE> 3,169,100 <TOTAL-LIABILITY-AND-EQUITY> 10,205,900 <SALES> 27,429,100 <TOTAL-REVENUES> 27,429,100 <CGS> 25,718,200 <TOTAL-COSTS> 27,245,400 <OTHER-EXPENSES> 0 <LOSS-PROVISION> 0 <INTEREST-EXPENSE> 87,100 <INCOME-PRETAX> 446,900 <INCOME-TAX> 169,500 <INCOME-CONTINUING> 272,800 <DISCONTINUED> 23,400 <EXTRAORDINARY> 0 <CHANGES> 0 <NET-INCOME> 296,200 <EPS-BASIC> 1.05 <EPS-DILUTED> 1.04