La Posta Substance Abuse Center Outpatient Substance Abuse Services is an outpatient drug rehab located in Boulevard that offers substance abuse treatment and other drug rehab services. Located in Boulevard, California, La Posta Substance Abuse Center Outpatient Substance Abuse Services provides special treatment drug and alcohol rehab programs for adolescents and people struggling with both addiction and mental disorders . La Posta Substance Abuse Center Outpatient Substance Abuse Services accepts self payment as payment for drug and alcohol rehab services.