After December 31, 1982, the name and license number of the physician shall be printed or preprinted on a written prescription for drugs and on a written order for services or equipment to be provided to a patient by another provider unless the patient is receiving those drugs or other services or equipment as part of inpatient services.
49 Pa. Code § 16.91
This section cited in 49 Pa. Code § 18.158 (relating to prescribing and dispensing drugs, pharmaceutical aids and devices).