Between 2014 and 2018, the use of buprenorphine to treat opioid use disorder increased nearly four times among Medi-Cal enrollees, according to a recent article from California Healthline. The article also describes California MAT Expansion project efforts including a recent media campaign, Choose Change California and its treatment locator, as well as efforts to inform providers about obtaining a waiver to prescribe buprenorphine and expand MAT for tribal populations.