By Monica E. Oss If you are at the helm of a provider organization, the slow march towards value-based reimbursement (VBR) is familiar territory by now. But in the latter half of this year, we've seen new movement from payers and health plans that indicate the pace seems to be accelerating. There has been a consistent uptick in the number of health plans that have adopted VBR—and the volume of their reimbursement models that are shifting to VBR. A Healthcare Financial Management Association (HFMA) survey found that health plans' use of value-based mechanisms has doubled since 2015 from 12% of all payments to 24%…