Project REACH: A Comprehensive Telehealth Intervention at Syringe Service Programs to Engage People Who Use Drugs

People Who Use Drugs Inclusion Criteria: * 18 years of age or older * able to speak and understand English * have used an illicit substance at least once in the past year * have lived in the study area (in or near their city of their recruitment) for at least 6 months * have active health insurance by the start of the Project REACH trial date People Who Use Drugs Exclusion Criteria: * Unable or unwilling to provide informed consent Stakeholder Inclusion Criteria: * 18 years of age or older * able to speak and understand English * currently employed or volunteering with the PCC or an SSP enrollment site for at least one year at the time of the interview OR hired as a study navigator at one of the four enrollment sites Stakeholder Exclusion Criteria: * Unable or unwilling to provide informed consent