1. Electronic prescribing of controlled substances and use of prescription drug monitoring programs among office-based physicians, 2019-2021 Author(s): Richwine, Chelsea J., authorEverson, Jordan, author Publication: Washington, DC : Office of the National Coordinator for Health Information Technology, January 2023 Subject(s): Controlled SubstancesElectronic PrescribingPractice Patterns, Physicians'Prescription Drug Monitoring ProgramsUnited States