The Texas Controlled Substance Act eliminated the Controlled Substances Registration (CSR) requirement effective September 1, 2016. Practice managers, healthcare providers, and owners no longer need CSR for insurance contracting or licensing. Instead, focus on maintaining federal DEA registration for prescribing controlled substances. Insurers typically require state medical licenses, CAQH profiles, and other credentials for contracting. Stay compliant and streamline your practice by understanding these key changes.