These doctors are concerned you won't be able to afford the medicines they want to prescribe you. A national group of more than 140,000 physicians on Tuesday joined a coalition dedicated to reversing the growing trend of high-cost specialty drugs, which are being blamed for straining the finances of patients, insurance plans and public health coverage programs. The move by the American College of Physicians came a day after the Obama administration said it is asking Congress to give it power to negotiate with drugmakers over the prices of costly prescription medication provided to Medicare beneficiaries.