“…In New York City, buprenorphine is most frequently used in neighborhoods with the highest percentage of White and high-income residents (Hansen et al, 2013). This pattern is replicated by other studies finding income and ethnic/racial disparities in buprenorphine treatment (Baxter, Clark, Samnaliev, Leung, & Hashemi, 2011; Knudsen, Ducharme, & Roman, 2006) and that a majority of buprenorphine patients are treated in private physician practices (Stein et al, 2012). Buprenorphine in the US, with some regional exceptions such as Baltimore, where the municipal government promoted its public sector dissemination (Schwartz et al, 2013), has served as a specific intervention for prescription opioid dependent people who are more likely to be affluent, educated, and White than urban heroin users.…”