A doctor was taken to hospital after he was attacked at a community health centre in West Dunbartonshire.
The GP was taken to the Western Infirmary after the assault in Clydebank at 1530 GMT on Thursday. He was released after treatment.
Police have arrested a 45-year-old man in connection with the incident.
Tom Divers, chief executive of the local health board, said: "I am deeply shocked and very concerned about this ... it is totally unacceptable."