LOS ANGELES — California has joined a whistleblower lawsuit that claims Bristol-Myers Squibb Co. bribed doctors to prescribe its drugs, costing insurers perhaps millions of dollars in the largest alleged health care fraud case ever handled by the state, Insurance Commissioner Dave Jones announced Friday.The suit claims company salespeople plied physicians with speaking fees, expensive meals, gifts and trips to induce or reward them for prescribing large amounts of its drugs, which were billed to private insurers.Read More... More on Pharmaceuticals