Objective: This study evaluates the efficiency of health services after converting two ”new management models” hospitals, the Virxe da Xunqueira, and the Hospital Universitario de La Ribera in Alzira, to public management in the regional health system. Material and methods: The data envelopment analysis (DEA) methodology was used. The inputs used were: the number of beds, understood as a capital factor, and the number of workers, interpreted as a labour factor. The outputs related to the result of ”production” were: consultations, emergencies, interventions, admissions, stays, average stay, percentage of occupancy, patients on the waiting list, and average waiting time. Results: Hospital Virxe da Xunqueira case, as a Foundation, stands out in consultations, emergencies, inpatients, and length of stay. On the other hand, the management of the Sergas stands out in surgeries and waiting lists, including patients and average waiting time. Hospital Universitario de La Ribera in Alzira case, public management in the hands of the Conselleria itself is less efficient than private management under the administrative concession model. Conclusions: With the reversion of hospital ownership, public administrations increase the budget of items related to personnel expenditure.