Zhang Shuxia, a doctor with Fuping County Maternal and Child Health Care Hospital, allegedly convinced the mothers to given up their "sick" newborns, China's state-run Xinhua News Agency reported.
The investigation into Zhang began in July when a mother reported her baby had been abducted. In that case, Zhang was accused of falsely claiming her child had a congenital disease. The baby was found in good condition in early August.
Authorities arrested nine suspects in August, including Zhang. Cases were brought against hospital President Wang Li, two other senior hospital managers and three county officials were dismissed.
Police said at least six other women have reported their newborns stolen by Zhang.