According to SAMHSA, "There was a net increase of 526 responding [substance abuse treatment] facilities between 2015 and 2016, to 14,399 facilities." (p. 11)

"The proportions of facilities offering the major types of care—outpatient, residential (non-hospital), and hospital inpatient—changed little between 2006 and 2016. Opioid treatment programs (OTPs), certified by SAMHSA, provide medication-assisted therapy with methadone, buprenorphine, and extended-release injectable naltrexone (Vivitrol®). Facilities with OTPs can be associated with any type of care. Facilities with OTPs made up 8 to 9 percent of all facilities between 2006 and 2016 [Table 2.4].

"• Outpatient treatment was provided by 80 to 82 percent of facilities during this period [Table 2.3].
"• Residential (non-hospital) treatment was provided by 28 percent in 2006 and 24 percent of facilities in 2016.
"• Hospital inpatient treatment was provided by 7 percent of facilities in 2006, decreasing to 5 percent of facilities in 2016.
"• Outpatient treatment was provided by 90 to 95 percent of OTP facilities from 2006 to 2016.
"• Residential (non-hospital) treatment was provided by 7 to 12 percent of OTP facilities from 2006 to 2016.
"• Hospital inpatient treatment was provided by 7 to 11 percent of OTP facilities from 2006 to 2016."

Source

Substance Abuse and Mental Health Services Administration. National Survey of Substance Abuse Treatment Services (N-SSATS): 2016. Data on Substance Abuse Treatment Facilities. BHSIS Series S-93, HHS Publication No. (SMA) 17-5039. Rockville, MD: Substance Abuse and Mental Health Services Administration, 2017.