From April 2017 through January 2019, a total of 55,938 clinical professionals were identified as having a waiver to prescribe buprenorphine, and 28,448 (50.9%) wrote at least one buprenorphine prescription. Buprenorphine is used as medication for opioid use disorder. Before a professional can prescribe buprenorphine, they must complete training through the federal Substance Abuse and Mental Health Services Administration (SAMHSA), and obtain a waiver from the federal Drug Enforcement Administration (DEA). Once they are granted buprenorphine for OUD prescribing authority, they may take on no more than 30 consumers with opioid use disorder (although some prescribers can . . .