BayMark Health Services is North America’s largest provider of medication-assisted treatment (MAT) for substance use disorders, helping thousands of individuals on their path to recovery every day. Our service offerings include opioid treatment programs (OTP), office-based opioid treatment (OBOT) practices, outpatient and inpatient detox services, residential treatment centers and behavioral health services. Our aim is to help as many individuals as we can in need of substance use and mental health disorders.