Lincolnshire Police are investigating an assault at a medical practice in Sutton Bridge.
The assault on January 11 occurred at the dispensary desk in the waiting room of the Sutton Bridge Medical Centre at approximately 11.30am.
The victim was not seriously injured as a result of the assault.
Officers investigating the assault are appealing for patients who witnessed the incident to come forward.
Anyone in the waiting room at the time of the assault should call Lincolnshire Police on 101, quoting incident number 171 of January 11.