Yes, substance abuse treatment centers often provide a completion certificate or a certificate of achievement upon successful completion of a drug rehab program. The certificate is a document that recognizes the patient’s commitment to treatment and their successful completion of the program. It may also serve as a form of verification for employers, insurance providers, or legal authorities, demonstrating that the individual has completed the program and is on the path to recovery. The specifics of the certificate and its value may vary depending on the treatment center and the program completed.