Toms, who spent four hours in a hospital Friday morning with food poisoning, nearly came back from 5-down against Tiger Woods in Sunday's final but moved to No. 6 this week.
Woods, who became the first player to win all four WGC events, remained firmly in first place for the 185th consecutive week.
Ernie Els, who was upset by Phil Tataurangi in the first round at La Costa, held on to second. He will defend his title in Dubai on the European Tour this week rather than defend his title at Doral.
Phil Mickelson stayed in third, followed by Vijay Singh, who hopes to return this week after a rib injury, and Retief Goosen, also a first-round casualty at the Match Play Championship.
Toms came in sixth, while Davis Love III was seventh. Sergio Garcia, who lost to 2002 champion Kevin Sutherland in the first round, dipped two to eighth, while Mike Weir and Padraig Harrington rounded out the top-10.
Nick Price and Chris DiMarco stayed pat this week at 11th and 12th, respectively. Jim Furyk and Rocco Mediate switched spots from last week with Furyk taking 13th and Mediate 14th.
Colin Montgomerie and Charles Howell III also switched places this week. The Scotsman moved to No. 15 while the young American dropped to 16th. Robert Allenby took 17th, Jerry Kelly went up two to 18th and Justin Leonard came in 19th.
Bob Estes fell two to 20th.
A pair of Australians who competed in the consolation match of the WGC- Accenture Match Play Championships made significant moves up the World Rankings. Adam Scott finished third and moved up 15 places to No. 33 while Peter Lonard, who lost to Scott on Sunday, climbed six notches to 27th.
Frank Lickliter captured the Chrysler Classic of Tucson Sunday and moved into the top-100. He jumped 40 spots to No. 91.