JWT purchased Tonic 360, primarily an interactive shop, in October 2000 after Tonic helped land the $100 million Sun Microsystems account.
The merged shop, with reported billings of $220 million and 100 employees, has as its clients Sun Microsystems, Pacific Gas & Electric, Cheap Tickets Inc., Diageo/United Distillers and Vintners wines, Infineon Technologies and Northern California Ford Dealers.
J. Walter Thompson West, including the Los Angeles office, has overall billings of $347 million, the company said in a statement.
In addition, Kevin Burke, previously general manager of Tonic 360, was named managing partner and general manager of JWT & TONIC. Iwan Thomis, formerly general manager of JWT San Francisco, becomes managing partner and director of strategic planning for JWT & TONIC.
Mr. Burke and Mr. Thomis will report to Peter Stranger, CEO of JWT West, who works out of Los Angeles. The Los Angeles office also houses an independent unit handling advertising for Symantec.