Deputy Attorney General Abdulrahman al-Sayyed said the Court of Cassation upheld the earlier rulings in the case, the Bahrain News Agency reported.
One physician was sentenced to five years, another to three years and seven sentences ranged from one month to one year, the report said.
The physicians were accused of taking over the Salmaniya Medical Complex during the anti-government demonstrations in February and March of 2011. Prosecutors charged the doctors with detaining and imprisoning people, and with turning the hospital into a place for illegal gatherings and strikes.
The doctors were sentenced by the Court of National Safety in June.
During the original trial, nine other doctors were acquitted.